Tach Conversion Question?

[dodge68charger]

I Started My 1969 Roadrunner For The First Time Last Night After installing The Dash and Noticed The Stock Style Aftermarket Tach I Installed Isnt Working. Standard Gauge Car.


It Has An Electronic Ignition and Had The voltmeter Conversion Done By Instrument Specialties

Is There A Conversion Kit I Need?

 

[Geoff 2]

Obvious question: is the tach correctly hooked up. Most tachs with inductive ign [ points, Chrys elec ] require the tach trigger wire to connect to the coil neg terminal.
CD ign such as MSD 6 usually need an adapter, such as #8910 or 8920.

 

[dodge68charger]

I Followed The Instructions That Came In The Kit

I ll Check To Make Sure I Have a Proper Ground On My Dash Frame and Double Check Its On The Negative Coil Side.

Thank You

 

[pnora]

Some ignitions will not drive the tachometer. MSD makes one and there are others on e-bay that are cheaper and work well. I recently went through this with my 69 Charger.

 

[dodge68charger]

Did You Go With The MSD?

 

[pnora]

Did You Go With The MSD?

No. I used this one. TACH TACHOMETER SIGNAL BOOSTER, 3~16V In -> 48~63V Out, compare to MSD 8920 | eBay

 

[Billccm]

Contact rt-eng.com

Great products and support.

 

[dodge68charger]

How Did You Go About Wiring The Ebay One?

The Msd Looks a Bit Much To Wire. Running a Stock Style Electronic Ignition

Is The ECU The Signal From The Negative Side Of The Coil?

Thanks

 

[pnora]

How Did You Go About Wiring The Ebay One?

The Msd Looks a Bit Much To Wire. Running a Stock Style Electronic Ignition

Is The ECU The Signal From The Negative Side Of The Coil?

Thanks

I made a small harness and mounted it behind the dash. I used the wiring at the tach. 1-ground to dash frame. 2-Power,a tee tap at the tachs 12 volt feed. 3-wire from coil to the box. 4-wire from box to tach terminal.

 

[dodge68charger]

Thank You! I’ll Order One This Morning.

Appreciate It!