1972 Dodger Charger 440 need some input on electron module

[Kobrak]

I was looking online for a new ignition module. When I fill out my car info on several parts sites, it says it will not fit my car when I select what I believe is the correct module. Mine is a 5 pin module(see pic), but the sites seem to think it should be a 4 pin module? Any input would be great. That first photo is from Carquest and it states it does not fit my car? Been on several sites and they all say the same thing for a 5 pin module?

 

[JG71B]

Honestly, I wouldn't even bother with the aftermarket bullshit. They never last. I would hit the shows or find someone on here selling a good OEM unit. Buy what you took off

 

[pnora]

72 had limited electronic ignition. Just order for a 73.

 

[PurpleBeeper]

Agreed. You may have a late 1972 Charger with 1973 ignition. It happens all the time

 

[pnora]

Agreed. You may have a late 1972 Charger with 1973 ignition. It happens all the time

Actually he has a 72 with 72 electronic ignition. 73 was not made when electronic hit the ground. Aftermarket listings have always been in error.

 

[F4R/T]

@HALIFAXHOPS can fix you right up

 

[Bee1971]

Cool seeing factory originals - Don’t throw that away if it still works

Dated 295 day of 1971

Any 4 pin Ignition Module will work with a Factory Dual Ballast Resistor

So yes the 4 pin will replace your 5 pin with no other modifications

Peace

 

[Vaanth]

I was looking online for a new ignition module. When I fill out my car info on several parts sites, it says it will not fit my car when I select what I believe is the correct module. Mine is a 5 pin module(see pic), but the sites seem to think it should be a 4 pin module? Any input would be great. That first photo is from Carquest and it states it does not fit my car? Been on several sites and they all say the same thing for a 5 pin module?

View attachment 1918597

View attachment 1918599

A current aftermarket electronic control unit (ECU) can replace your ECU. Current replacement ECUs with four pins work in any production Chrysler electronic ignition system of the type on your Charger whether using its original four terminal ballast resistor or a two terminal ballast resistor used with later systems and add-on Chrysler systems. However, modern replacements are of inferior quality compared to originals or aftermarket units in the past. Some replacement units may have five pins externally, rather than four, but the fifth pin is not connected internally.

The pictured ECU, number 3438850, first appeared as a running production change after May 6, 1971 on 1971 models with 340 engine and manual transmission. This same ECU continued in use in 1972 on some models. This original five pin ECU and other original ECUs through 1979 require a four terminal ballast resistor, as did early aftermarket replacements. 1980 and later Chrysler ECUs and later to current replacements can work with either type of ballast resistor.

If your original ECU is functional, I would keep it myself.

For some more information on 1972 ECU usage, original Chrysler ECUs, and a listing of many current and earlier aftermarket ECUs, refer to the following.

---

The electronic ignition system released after May 6, 1971 on 1971 models with 340 engine and manual transmission, was extended in 1972 to the following applications:

• Standard on 1972 A-bodies, B-bodies, and E-bodies with high performance engines.
• Standard on 1972 Imperials
• Standard on 1972 California C-bodies with 360 two barrel, 400 two barrel, and 440 four barrel engines.
• Optional on 1972 non-California C-bodies with 360 two barrel, 400 two barrel, and 440 four barrel engines.
• Optional on 1972 Dodge light trucks and compact vans, starting in January 1972.
• Standard on 1972 motor home 318-3 and 413-1 engines starting in June 1972.

Different versions and part numbers of the ECU were used in 1972 from 1971, including some with an engine speed limiter which was denoted by heat sink color. The non-limited 3438850 has a gold heat sink continued in production on some models. The red heat sink unit, part number 3656127 limits RPM to 5000-5200 and was used on 400 and 440 high performance manual transmission applications. The blue heat sink unit, part number 3656128 limits RPM to 5300-5500 and was used on 340 manual transmission applications.

In 1973, electronic ignition became standard on all domestic Chrysler vehicles. The speed limited ECUs were dropped from production. ECU part number 3656900, with gold heat sink and a white paint dot, replaced earlier ECUs as Chrysler improved the circuitry.

The following table is a summary of production Chrysler ECUs;

​

ECU Part Number	Usage	Pins	Ballast Resistor	Coil	Notes
3438850	1971-1972	5	3656199	2495531	1971 - 340 manual transmission only. 1972 - non-speed limited. Black case, gold heat sink.
3656127	1972	5	3656199	2495531	400 & 440 HP manual transmission, engine speed limited. Black case, red heat sink.
3656128	1972	5	3656199	2495531	340 manual transmission, engine speed limited. Black case, blue heat sink.
3656900	1973	5	3656199	2495531	Improved cold starting. Black case with white dot, gold heat sink.
3755550	1974	5	3656199	2495531	Added radio suppression capacitor. Black case, gold heat sink.
3874020	1974 - 1979	5	3656199 to mid 1975, then 3874767	2495531	Added voltage spike protection. Black case, gold heat sink.
4111850	1980 - 1991	4	4106340, 5206436	4176009	Four pins, two terminal external ballast resistor. Black or blue case, gold heat sink.

​

Aftermarket ECUs​

The multiple versions of the Chrysler ECUs performed the same basic function. In general, the aftermarket manufacturers produced a single ECU to cover all applications although early versions of five pin units preceded four pin units. Aftermarket high performance coils and aftermarket high performance or replacement ECUs ballast resistor requirements vary depending on manufacturer and ratings but often cover a broad range of applications functionally, although not necessarily ideally.

Most aftermarket ECUs made in the last 10-20 years are not made with the original style circuitry, nor the proper TO-3 case power transistor of the earlier units. The power handling capability of these units is diminished as is the reliability in many cases.

Later production replacement ECUs can have a fifth "dummy" pin in the connector, but they are actually four-pin units.

The following is a listing of aftermarket Chrysler ECUs. The listing includes many older, some obsolete, units, but also includes some more modern numbers, particularly where they have not changed for manufacturers still in operation.

NOTE: 4-pin or 5-pin is denoted in the listing in some cases, but it varies over the production runs of various units. Where 5-pin is marked for earlier produced units, the unit is actually a 5-pin.

AC Delco
- C1900 (5-pin)
- C1900B (5-pin)
- C1900Z (5-pin)
- C1907
- C1908 (4-pin)
- C1908B (4-pin)
- 1972454 (5-pin)
- 12309038
- 12327406
- 12334603
- 12334872 (5-pin)

Airtex
- 6H1062 (4-pin)
- 6H1063 (4-pin)
- 6H1064 (4-pin, possibly with dummy fifth pin)

Atlas
- 900 (5-pin)
- 901 (4-pin)

Autopart International
- 250634603
- 34603
- 98523

Autotron
- C-500

Auto Tune
- E310/E315 (4-pin) (visual pack)
- PT315 (4-pin)

Autozone (GP Sorensen)
- EL110 (4-pin)

Big A (See Echlin)

Borg Warner, BWD
- CBE5 (5-pin)
- CBE5P (5-pin)
- CBE14 (4-pin)
- CBE14P (4-pin)
- CBE14Z (4-pin)

Bosch
- 9290010655 (5-pin) (Mexico, may have different case configuration)

CarQuest
- 55-1562 (4-pin) (Wells)
- 55-1563 (4-pin) (Wells)
- 55-1564 (4-pin) (Wells)
- LX101 (4-pin) (SMP)
- 7037
- CBE1016 (4-pin)
- CBE1027 (4-pin)

Cartek
- 7037
- 7096

CDI Electronics
- E11-0001 (marine)

COBRALINE
- EL110V

Delco
- See AC Delco

DelcoRibo
- IGM1037 (4-pin)
- IGM1038 (5 pin, dummy fifth pin)

Delphi
- DS10067

Duralast
- ICMB10075
- ICMB10134
- CR100 (5-pin)
- CR109 (4-pin)
- CR114 (4-pin)

Dura-Life (E-Tron)
- A411HT (4-pin)
- A850HT (5-pin)

Echlin/NAPA
- TP50 (5-pin)
- TP51 (4-pin)

ELVAC
- E165 5 (5-pin) (Mexico, may have different case configuration)

E-Tron
- A411 (4-pin)
- A850 (5-pin)
- CEB (5-pin)

FCI (Factory Connections Int)
- MD-801 (4-pin)

Federated Ignition
- CBE14SB

Filko
- CH-300 (5-pin)
- CH-300X (5-pin)
- CH-301 (4-pin)

Finline
- 99719

Forecast
- 7096 (5-pin, later units might be 4-pin)

Formula Auto Parts
- IGM12 (4-pin)
- IGM16 (5-pin)

General Motors
- 12334603

Goss Vehicle Mechatronics (Australia)
- IM136 (5-pin)

GP Sorensen
- EL101 (5-pin)
- EL110 (4-pin)

Guaranteed Parts (GP)
- EL101 (5-pin)
- EL110 (4-pin)

High-Tech
- E100 (HT-100) (4-pin)

HiRev 7500
- 40805 (4-pin)

Jegs
- 555-40800, 40800 “Orange box” (4-pin)
- 555-40805, 40805 “Blue box”, HiRev 7500 (4-pin)

Kem, KemParts
- E100 (5-pin)
- E106 (4-pin)
- E106X (4-pin)
- IM-100 (4-pin, May have dummy fifth pin)

Lucas
- DAB591
- C1908
- DYC346

Mancini Racing
- MRE4120505 (4-pin) (Pseudo-copy of Mopar P4120505)
- MREP4120505-BLK (4-pin) (MRE4120505 black case)

Marelli
- 940038516

MasterPro
- 2-7037 or 27037

Mighty
- 2-3000 (5-pin)
- 2-3000A (4-pin)

Mileage Plus Ignition (MPI)
- TP50SB (5-pin)
- TP51SB (4-pin)

MobileTron
- IG-C411 (4-pin, may have dummy fifth pin)
- IG-C850 (4-pin)

Motorcraft
- DYC-162 (5-pin)

Motorola
- 6-60 (5-pin)

NAPA (See Echlin)

Niehoff
- AL401 (5-pin)
- AL403 (4-pin)
- AL403CS (4-pin)

Original Equipment Management
- 7037
- 7096 (4-pin)

Preferred Parts
- M-2020 (4-pin)

Premier Auto Trade (PAT) (Australia)
- MOD-066 (5-pin)

ProForm
- 440-424 “Orange box” (4-pin) (includes wiring harness)
- 440-425 “Blue box” (4-pin) (includes wiring harness)

P&D
- C-1 (5-pin) (Less RPM Limiter)

Regitar
- C411 (4-pin, may have dummy fifth pin)
- C850 (4-pin)

The R/T Garage
- REV-N-NATOR (4-pin) (Adjustable rev limiter)

Sierra Marine
- CR109 (4-pin)

Sierra Supply
- 18-5105 (5 pin) (replaces 3874020)

Silver Streak
- A-411, AA411, 635 (4-pin)
- A-850, AA850 (5-pin)

Sorensen
- CE24 (Pulsemaker) (4-pin)

SOSMetal
- 122101 (4-pin)

Standard Motor Products, Elextron
- LX100 (5-pin)
- LX101 (4-pin)
- LX101T (4-pin)

Switches (Kidde, Federal Mogul)
- 400020 (5-pin)
- 400040 (4-pin)

TMR
- IG-C411 (4-pin)

Transpo
- CM850 (4-pin)
- CM900 (5-pin, dummy fifth pin)

Tridon (Australia)
- TIM024 (5-pin)

Trust
- PT315 (4-pin)

Tru-Tech (Standard Motor Products)
- LX-101T (4-pin)

United Motor Products
- M411 (4-pin)

Valley Forge
- ES1 (4-pin)

WAIglobal
- CM850 (4-pin)
- ICM101 (4-pin)

Wells
- CR100 (5-pin)
- CR1100 (5-pin, carded)
- CR109 (4-pin)
- CR1109 (4-pin, carded)
- CR114 (4-pin, with a dummy fifth pin)
- 551562 or 55-1562 (4-pin)
- 551563 or 55-1563 (4-pin)
- 551564 or 55-1564 (4-pin)

White Motor Company (OEM user)
- 31-2759157 (5-pin)

WVE (Wells Vehicle Electronics)
- 6H1062 (4-pin)
- 6H1063 (4-pin)
- 6H1064 (4-pin, possibly with dummy fifth pin)

​

---

​

---

​

 

[MWbirdLOVER70]

I was looking online for a new ignition module. When I fill out my car info on several parts sites, it says it will not fit my car when I select what I believe is the correct module. Mine is a 5 pin module(see pic), but the sites seem to think it should be a 4 pin module? Any input would be great. That first photo is from Carquest and it states it does not fit my car? Been on several sites and they all say the same thing for a 5 pin module?

View attachment 1918597

View attachment 1918599

@HALIFAXHOPS

 

[toolmanmike]

@HALIFAXHOPS can fix you right up

X2 He has the good stuff and tests every ECU before it goes out the door.

 

[Kobrak]

Cool seeing factory originals - Don’t throw that away if it still works

Dated 295 day of 1971

Any 4 pin Ignition Module will work with a Factory Dual Ballast Resistor

So yes the 4 pin will replace your 5 pin with no other modifications

Peace

So what happens to the light blue/yellow wire that is in the 5 pin?

 

[RemCharger]

A current aftermarket electronic control unit (ECU) can replace your ECU. Current replacement ECUs with four pins work in any production Chrysler electronic ignition system of the type on your Charger whether using its original four terminal ballast resistor or a two terminal ballast resistor used with later systems and add-on Chrysler systems. However, modern replacements are of inferior quality compared to originals or aftermarket units in the past. Some replacement units may have five pins externally, rather than four, but the fifth pin is not connected internally.

The pictured ECU, number 3438850, first appeared as a running production change after May 6, 1971 on 1971 models with 340 engine and manual transmission. This same ECU continued in use in 1972 on some models. This original five pin ECU and other original ECUs through 1979 require a four terminal ballast resistor, as did early aftermarket replacements. 1980 and later Chrysler ECUs and later to current replacements can work with either type of ballast resistor.

If your original ECU is functional, I would keep it myself.

For some more information on 1972 ECU usage, original Chrysler ECUs, and a listing of many current and earlier aftermarket ECUs, refer to the following.

---

The electronic ignition system released after May 6, 1971 on 1971 models with 340 engine and manual transmission, was extended in 1972 to the following applications:

• Standard on 1972 A-bodies, B-bodies, and E-bodies with high performance engines.
• Standard on 1972 Imperials
• Standard on 1972 California C-bodies with 360 two barrel, 400 two barrel, and 440 four barrel engines.
• Optional on 1972 non-California C-bodies with 360 two barrel, 400 two barrel, and 440 four barrel engines.
• Optional on 1972 Dodge light trucks and compact vans, starting in January 1972.
• Standard on 1972 motor home 318-3 and 413-1 engines starting in June 1972.

Different versions and part numbers of the ECU were used in 1972 from 1971, including some with an engine speed limiter which was denoted by heat sink color. The non-limited 3438850 has a gold heat sink continued in production on some models. The red heat sink unit, part number 3656127 limits RPM to 5000-5200 and was used on 400 and 440 high performance manual transmission applications. The blue heat sink unit, part number 3656128 limits RPM to 5300-5500 and was used on 340 manual transmission applications.

In 1973, electronic ignition became standard on all domestic Chrysler vehicles. The speed limited ECUs were dropped from production. ECU part number 3656900, with gold heat sink and a white paint dot, replaced earlier ECUs as Chrysler improved the circuitry.

The following table is a summary of production Chrysler ECUs;

​

ECU Part Number	Usage	Pins	Ballast Resistor	Coil	Notes
3438850	1971-1972	5	3656199	2495531	1971 - 340 manual transmission only. 1972 - non-speed limited. Black case, gold heat sink.
3656127	1972	5	3656199	2495531	400 & 440 HP manual transmission, engine speed limited. Black case, red heat sink.
3656128	1972	5	3656199	2495531	340 manual transmission, engine speed limited. Black case, blue heat sink.
3656900	1973	5	3656199	2495531	Improved cold starting. Black case with white dot, gold heat sink.
3755550	1974	5	3656199	2495531	Added radio suppression capacitor. Black case, gold heat sink.
3874020	1974 - 1979	5	3656199 to mid 1975, then 3874767	2495531	Added voltage spike protection. Black case, gold heat sink.
4111850	1980 - 1991	4	4106340, 5206436	4176009	Four pins, two terminal external ballast resistor. Black or blue case, gold heat sink.

​

Aftermarket ECUs​

The multiple versions of the Chrysler ECUs performed the same basic function. In general, the aftermarket manufacturers produced a single ECU to cover all applications although early versions of five pin units preceded four pin units. Aftermarket high performance coils and aftermarket high performance or replacement ECUs ballast resistor requirements vary depending on manufacturer and ratings but often cover a broad range of applications functionally, although not necessarily ideally.

Most aftermarket ECUs made in the last 10-20 years are not made with the original style circuitry, nor the proper TO-3 case power transistor of the earlier units. The power handling capability of these units is diminished as is the reliability in many cases.

Later production replacement ECUs can have a fifth "dummy" pin in the connector, but they are actually four-pin units.

The following is a listing of aftermarket Chrysler ECUs. The listing includes many older, some obsolete, units, but also includes some more modern numbers, particularly where they have not changed for manufacturers still in operation.

NOTE: 4-pin or 5-pin is denoted in the listing in some cases, but it varies over the production runs of various units. Where 5-pin is marked for earlier produced units, the unit is actually a 5-pin.

AC Delco
- C1900 (5-pin)
- C1900B (5-pin)
- C1900Z (5-pin)
- C1907
- C1908 (4-pin)
- C1908B (4-pin)
- 1972454 (5-pin)
- 12309038
- 12327406
- 12334603
- 12334872 (5-pin)

Airtex
- 6H1062 (4-pin)
- 6H1063 (4-pin)
- 6H1064 (4-pin, possibly with dummy fifth pin)

Atlas
- 900 (5-pin)
- 901 (4-pin)

Autopart International
- 250634603
- 34603
- 98523

Autotron
- C-500

Auto Tune
- E310/E315 (4-pin) (visual pack)
- PT315 (4-pin)

Autozone (GP Sorensen)
- EL110 (4-pin)

Big A (See Echlin)

Borg Warner, BWD
- CBE5 (5-pin)
- CBE5P (5-pin)
- CBE14 (4-pin)
- CBE14P (4-pin)
- CBE14Z (4-pin)

Bosch
- 9290010655 (5-pin) (Mexico, may have different case configuration)

CarQuest
- 55-1562 (4-pin) (Wells)
- 55-1563 (4-pin) (Wells)
- 55-1564 (4-pin) (Wells)
- LX101 (4-pin) (SMP)
- 7037
- CBE1016 (4-pin)
- CBE1027 (4-pin)

Cartek
- 7037
- 7096

CDI Electronics
- E11-0001 (marine)

COBRALINE
- EL110V

Delco
- See AC Delco

DelcoRibo
- IGM1037 (4-pin)
- IGM1038 (5 pin, dummy fifth pin)

Delphi
- DS10067

Duralast
- ICMB10075
- ICMB10134
- CR100 (5-pin)
- CR109 (4-pin)
- CR114 (4-pin)

Dura-Life (E-Tron)
- A411HT (4-pin)
- A850HT (5-pin)

Echlin/NAPA
- TP50 (5-pin)
- TP51 (4-pin)

ELVAC
- E165 5 (5-pin) (Mexico, may have different case configuration)

E-Tron
- A411 (4-pin)
- A850 (5-pin)
- CEB (5-pin)

FCI (Factory Connections Int)
- MD-801 (4-pin)

Federated Ignition
- CBE14SB

Filko
- CH-300 (5-pin)
- CH-300X (5-pin)
- CH-301 (4-pin)

Finline
- 99719

Forecast
- 7096 (5-pin, later units might be 4-pin)

Formula Auto Parts
- IGM12 (4-pin)
- IGM16 (5-pin)

General Motors
- 12334603

Goss Vehicle Mechatronics (Australia)
- IM136 (5-pin)

GP Sorensen
- EL101 (5-pin)
- EL110 (4-pin)

Guaranteed Parts (GP)
- EL101 (5-pin)
- EL110 (4-pin)

High-Tech
- E100 (HT-100) (4-pin)

HiRev 7500
- 40805 (4-pin)

Jegs
- 555-40800, 40800 “Orange box” (4-pin)
- 555-40805, 40805 “Blue box”, HiRev 7500 (4-pin)

Kem, KemParts
- E100 (5-pin)
- E106 (4-pin)
- E106X (4-pin)
- IM-100 (4-pin, May have dummy fifth pin)

Lucas
- DAB591
- C1908
- DYC346

Mancini Racing
- MRE4120505 (4-pin) (Pseudo-copy of Mopar P4120505)
- MREP4120505-BLK (4-pin) (MRE4120505 black case)

Marelli
- 940038516

MasterPro
- 2-7037 or 27037

Mighty
- 2-3000 (5-pin)
- 2-3000A (4-pin)

Mileage Plus Ignition (MPI)
- TP50SB (5-pin)
- TP51SB (4-pin)

MobileTron
- IG-C411 (4-pin, may have dummy fifth pin)
- IG-C850 (4-pin)

Motorcraft
- DYC-162 (5-pin)

Motorola
- 6-60 (5-pin)

NAPA (See Echlin)

Niehoff
- AL401 (5-pin)
- AL403 (4-pin)
- AL403CS (4-pin)

Original Equipment Management
- 7037
- 7096 (4-pin)

Preferred Parts
- M-2020 (4-pin)

Premier Auto Trade (PAT) (Australia)
- MOD-066 (5-pin)

ProForm
- 440-424 “Orange box” (4-pin) (includes wiring harness)
- 440-425 “Blue box” (4-pin) (includes wiring harness)

P&D
- C-1 (5-pin) (Less RPM Limiter)

Regitar
- C411 (4-pin, may have dummy fifth pin)
- C850 (4-pin)

The R/T Garage
- REV-N-NATOR (4-pin) (Adjustable rev limiter)

Sierra Marine
- CR109 (4-pin)

Sierra Supply
- 18-5105 (5 pin) (replaces 3874020)

Silver Streak
- A-411, AA411, 635 (4-pin)
- A-850, AA850 (5-pin)

Sorensen
- CE24 (Pulsemaker) (4-pin)

SOSMetal
- 122101 (4-pin)

Standard Motor Products, Elextron
- LX100 (5-pin)
- LX101 (4-pin)
- LX101T (4-pin)

Switches (Kidde, Federal Mogul)
- 400020 (5-pin)
- 400040 (4-pin)

TMR
- IG-C411 (4-pin)

Transpo
- CM850 (4-pin)
- CM900 (5-pin, dummy fifth pin)

Tridon (Australia)
- TIM024 (5-pin)

Trust
- PT315 (4-pin)

Tru-Tech (Standard Motor Products)
- LX-101T (4-pin)

United Motor Products
- M411 (4-pin)

Valley Forge
- ES1 (4-pin)

WAIglobal
- CM850 (4-pin)
- ICM101 (4-pin)

Wells
- CR100 (5-pin)
- CR1100 (5-pin, carded)
- CR109 (4-pin)
- CR1109 (4-pin, carded)
- CR114 (4-pin, with a dummy fifth pin)
- 551562 or 55-1562 (4-pin)
- 551563 or 55-1563 (4-pin)
- 551564 or 55-1564 (4-pin)

White Motor Company (OEM user)
- 31-2759157 (5-pin)

WVE (Wells Vehicle Electronics)
- 6H1062 (4-pin)
- 6H1063 (4-pin)
- 6H1064 (4-pin, possibly with dummy fifth pin)

​

---

​

---

​

Thank you for that Vaanth. Always great posts.

 

[Vaanth]

So what happens to the light blue/yellow wire that is in the 5 pin?

The blue with yellow tracer wire continues to be used when switching from a five pin to a four pin ECU as it is the run power lead to the ECU, pin #1. This wire connects to the Ignition RUN switch side of the ballast resistor.

The green with red tracer wire connected to pin #3 is no longer used when switching from a five pin to a four pin ECU as it is the feed from the five ohm auxiliary resistor to the ECU. The auxiliary resistor function is inside the revised four pin ECU circuitry. The four terminal ballast resistor and green with red tracer wire can be left in place. It is no longer terminated in the ECU and draws no power.

The following diagram shows the effective change of running a four pin ECU in place of a previous five pin ECU with the original wiring and four terminal ballast resistor still in place.

 

[Bee1971]

Vaanth already answered

Peace

 

[Bee1971]

When the Standard LX101 was made in the USA

These are the ones you want

Anyways you can read the instructions included with the four pin ignition module back in the 1980s

Peace