Aftermarket Tach

[TylerCharger69]

I have an aftermarket Tach  that I took out of my 442 years ago.  My question is...I have 4 wires  coming from it....Green, Red, Black, and white.    What goes where?....I totally forgot!!!

[mikepmcs]

Black to negative

Red  to power

Green to negative side of ignition coil(don't let it ground out on something else)

White is for the tach lighting(like hooking it to the dimmer switch wiring for control).

hope that helps

v/r
Mike

[TylerCharger69]

Wow...that was fast....thanks Mike

[mikepmcs]

Anything I can do for a fellow Mopar brother.  I don't know much and ya'll help me so much with your engine stuff.  I'm just dying to assist with anything that I might know.
v/r
Mike

[TylerCharger69]

That's good to know!!!   Thanks!!!

[greenpigs]

So I got a new Tach http://www.summitracing.com/parts/ATM-2891/ and I see they have a wire running to a keyed source. I don't want to cut my Year One harness, is there something else I can hook up to that will work? I did a search but most of the topics are for stock tic toc tachs.


Thanks

[Tunis68XS29]

Hi,

Are you asking where to hook up the power to the tach on a keyed source, I just wanted to be sure..

The best way to hook it up without cutting anything would be at the ballast resistor. That is not the best looking solution perhaps but it works. You can always take a voltmeter and search for a keyed source. Without consulting a wiring diagram; the radio or fusebox could have a keyed source 

Per

[Nacho-RT74]

get from fuse box... you'll find ACC sources there with terminals like this:



and will be able to hook a regular female terminal onto the male extension... or use another one like that to hook later another acc

[TylerCharger69]

Wow!!!   i posted this back in 2006!!!!   

[greenpigs]

Got it Nacho..thanks!