Aftermarket Tach Install

[Benm109]

I'm installing an aftermarket tachometer in my 91 Camaro (stock tach is acting crazy). There are four wires to hook up. After hunting wires for a couple of days and looking through wiring diagrams I found three of wires I need to hook up. I've already found/hooked up 12V dash lighting, a good ground, and tach signal. The only one I can't figure out where to hook up is a 12V ignition source. There are a ton of wires under the steering column and I can't seem to find a wire for the ignition switch. Any suggestions or advice?

P.S. The tach is an Autometer Sport-Comp 5" 8000 RPM Tach, if that helps.

Thanks in advance for the help!

[Injuneer]

Don't know the details of the 91's, but on the 4th Gens, the fuse panel at the end of the dash has a small square hole with a "spade lug" in it, labeled "IGN". That is +12V switched, fuse protected power, and I use it for all my instrument power. Take a look at your fuse panel and maybe you will see something similar. You just crimp a matching female plug on it and press it into the connection.... see orange wire below:

[Benm109]

Thanks , Injuneer. I figured that out yesterday from some people I asked on another forum. They kept telling me to use the IGN spot but I was stupid and thought that since there was no fuse their I couldn't use it.

[KnightFire]

The easiest way I know of is to tap into the 12V switched lead that goes to your stereo...thats what I did for mine.





KnightFire