HEI like I'm 5

Electrical & Ignition

  1. 3rdgenCharger

    3rdgenCharger Member

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    I've searched.. Here and google. Evidently I'm not smart enough to do this, so will somebody please excuse my ignorance while explaining how to convert my 1974 charger 318 car to HEI.. I'm sure that's been worn out here but I'm telling ya.. This is wearing me out.
    1. Last owner got rid of the points and installed orange box.
    2.Ive read ive got to use the "run and start" wires to the new HEI distributer. What wires are those??
    3. What components do I need to get out of the car once HEI is wired? Voltage regulator? Orange box? Etc..
    4. I cant think of anything else..

    Any and all help is very much appreciated.. Thank you in advanced.
    -Matt

    20190615_135032.jpg 20190615_135042.jpg 20190615_135006_HDR.jpg 20190615_135003_HDR.jpg 20190615_135023_HDR.jpg 20190615_135018_HDR.jpg
     
  2. 1972GY8SE

    1972GY8SE Well-Known Member

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    Connect this wire.
    upload_2019-6-15_13-32-51.png
    To here.
    upload_2019-6-15_13-21-54.png
    Using one of these.
    upload_2019-6-15_13-24-43.png
     
    Last edited: Jun 15, 2019
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    • 3rdgenCharger

      3rdgenCharger Member

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      Awesome! Thank you very much
       
    • 1972GY8SE

      1972GY8SE Well-Known Member

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      Last edited: Jun 15, 2019
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      • 3rdgenCharger

        3rdgenCharger Member

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        Didn't work.. :/
         
      • Fran Blacker

        Fran Blacker FBBO Gold Member FBBO Gold Member

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        • Budnicks

          Budnicks You Can Just Thank Me Latter

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          welcome to FBBO

          maybe post the question in the Ignition
          &/or electronics forum/s section here on FBBO too

          good luck
           
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          • 66chargerpat

            66chargerpat Well-Known Member

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            You will need the wire that goes to the + side of the old coil with the blue wire hooked together connected to the Bat terminal on the new dist cap. That way you will feed power both while cranking and run positions of the ignition switch. Pat
             
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            • Fran Blacker

              Fran Blacker FBBO Gold Member FBBO Gold Member

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              Designedtodrive sells a bracket that mount to bottom of dist and hei unit mounts to it for easy install.
               
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              • BeepBeepRR

                BeepBeepRR Well-Known Member

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                Jumper from the brown side of the ballast resistor and take that to the batt terminal on the HEI. Try that and see if it works.
                 
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                • 3rdgenCharger

                  3rdgenCharger Member

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                  Dang thing still won't start.. Gonna do some more trouble shooting in the morning
                   
                • beanhead

                  beanhead Well-Known Member

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                  Regarding the 'start' and 'run' wires-
                  There are two wires coming from your ignition switch.. (should be!)a brown and a blue w/ a stripe. The brown lands on one side of the ballast resistor, as a junction point, and carries 12 volts directly to the coil from there when cranking the starter. When the key is released to the 'run' position, the 12 volts from the ignition switch is now carried on the blue w/stripe wire, goes through the resistor and then to the coil. This lets the coil get full voltage only when starting. When running, the resistor knocks the voltage down some to avoid damaging the coil. With the factory setup, the coil could withstand 12v during cranking but would fry if it got the full 12v the whole time the car was running.
                   
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                  • beanhead

                    beanhead Well-Known Member

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                    Relax and take it from the beginning, you'll get it figured out. Try this, just to verify: get a voltage tester. First, unplug the main coil wire to the distributor cap! Now unplug the wires from the ballast resistor and have someone turn the key to start, while checking for voltage. Then check them with the key in run. Make note of which wire was hot at which key position. This way you can at least verify which wire is which. You said the previous owner changed things; they could have swapped colors or done who knows what!
                     
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                    • Officer Higgins

                      Officer Higgins Well-Known Member

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                      • Frank Mopar

                        Frank Mopar Well-Known Member

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                        The HEI is as good or better then any aftermarket system out there.
                         
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                        • MoparLeo

                          MoparLeo NRA PATRON LEVEL LIFE MEMBER FBBO Gold Member

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                          74 Mopars did not come with points. Wouldn't work with a Orange box anyway. Just buy a $50.00 reman Mopar distributor and be done with it. No modifications or problems. You should be asking the company/person who sold you the distributor these questions. Should have come with directions.....I apologize for the last few lines. But not for keeping simple. If you want to go HEI, do it right and get quality components. The Mopar system still works and it looks like you only lack a distributor...........anyone disagree with that ?

                          Mopar_Electronic_Ignition_diagram.jpg
                           
                          Last edited: Jun 16, 2019
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                          • BeatersRus

                            BeatersRus Well-Known Member

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                            jaysus....there should be a dick of the day thread and some posts should be sent there.....
                            look,that hei he has looks identical to the one i got off ebay,and if it is,
                            the instructions!! lol were garbage and literally 2 sentences.
                            it turned out to be a chinese by-product so theres no telling how good it really even is.
                            i personally never used mine,shelved it,im interested to see how the op makes out with it.
                            at any rate,why not dial it back a hair and help the guy.

                            to the Op,
                            im surprised because i have the same dis and i wondered if it actually fit in any mopars with that big cap.

                            also,the hei system was Always regarded as way better than the others.
                            it still holds its own with the aftermarket stuff.
                             
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                            • 3rdgenCharger

                              3rdgenCharger Member

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                              Does it get lonely? Up there on your pedistal
                               
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                              • BeatersRus

                                BeatersRus Well-Known Member

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                                i prefer my couch :thankyou: and ty for such a positive reply.:jackoff:
                                :lol:
                                 
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                                • dadsbee

                                  dadsbee FBBO Gold Member FBBO Gold Member

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                                  First day here and you're pissing on the guy trying to help you and not the guy insulting your reading ability.. ... read the posts in order and maybe it'll make sense to you!
                                   
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