how to install a tach??

[KustmAce]

Originally Posted by dalaw10

I tryed everything you guys told me to try and my tach still doesn't work. What should I do?

Have a professional do it.

I got a Sunpro tach (This one-->CLICK) for my birthday this year, and it needed an adapter for two wires in the engine. Not only were the signal wires really tough to get to, I didnt want to have to do that by myself. Plus, the tach I got only had about 8 inches of wires, so they all needed to be extended.

[MyCaVSuCkS]

what kind of adapter do you need to install an aftermarket tach in a 98 cav n wer do u get 1 of dem from.

[jakegday]

Originally Posted by MyCaVSuCkS

what kind of adapter do you need to install an aftermarket tach in a 98 cav n wer do u get 1 of dem from.

a tach adaptor, and this is where i got mine
http://www.sunpro.com/product_detail.php?pid=16356
heres another good one
http://rksport.com/shop/item.asp?itemid=424
i like your name

[tracker_66]

The way I did it in my '94 was quite simple, and I assume the 3rd-gen Cavvies will work the same. Even if the car does not have a tach in the gauge cluster, those wacky GM engineers wired the car for it! You have to pull the stock gauge cluster out and find the one lead in the harness that goes to the stock tach. (If you have a factory service manual, and I highly recommend having one, the pinouts will be printed in the back under Chassis Electrical.) Then simply run the positive lead to a SWITCHED circuit (i.e. wipers or radio), run the ground wire, and illumination wire to the dash lights. It's a little time-consuming, but not a hard job.

Good luck!

[jakegday]

no, bad assumption, you're wrong, that wont work on a 3rd gen

if you would have even read this thread though, you'd see that the question has already been answered, years ago in fact

something to remember for next time

welcome to AF!

[lewis137]

hey guys i bought a sunpro tach and the adaptor and it still didnot work right, it was a waste of money and time, the adaptor was $50 at autozone. more than the tach !! I am gonna try the tack lead to the purple wire, i have nothing to lose