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73-87 Chevy _ GMC Trucks => Interior & Equipment => Topic started by: Low87c10 on April 23, 2009, 08:22:42 pm

Title: Factory tach swap?
Post by: Low87c10 on April 23, 2009, 08:22:42 pm

I have an 87 c10, and somehow I inherited a factory tach dash from some other model year. How much of a wiring nightmare is it going to be to swap it over? Are there available wiring diagrams?

Title: Re: Factory tach swap?
Post by: Captkaos on April 24, 2009, 11:34:59 am

What year is the cluster out of?  If it is anything other than a 78-up it won't work, plus you HAVE to keep your speedo and the font wont match.
All the wiring schematics are in the Tech forum, you will have to repin everything to make it work.

Title: Re: Factory tach swap?
Post by: Low87c10 on April 24, 2009, 02:52:25 pm

no clue what year its out of...any idea how to tell?

Title: Re: Factory tach swap?
Post by: Captkaos on April 24, 2009, 03:41:43 pm

73-75 has an amp gauge (never plug one into anything but a 73-75)
76-77 has a volt gauge with mechanical oil
78-up has all electronic gauges

Title: Re: Factory tach swap?
Post by: Low87c10 on April 24, 2009, 03:50:41 pm

thanx!