while looking through the p.o.'s garage i found the rally pack,minus the plastic lens and the needle on the temp gauge is missing,but i plugged it in anyway and the only thing that worked is the tach twitched for a second then stayed at 3000 rpm and the printed circut board isn't the best in the world. where would i get a new printed circut board? and the one that is on there has a spot for two plug ins but i only found one which is missing one of the little clips to hold it on,is there suppose to be a second plug in or is that for the idiot lights? this is on a 1980 olds cutlass.

 

still nothing?

 

The two spots on the back of the tac is for choice of 6 cyl. or 8. The modules are interchangeable from 1978 to 1988. GM no longer stocks the parts for these. Junk yard maybe, however the chances of them working accurately are slim.

 

that's what i was afraid of. is there two plug ins or just one?

 

I saw brand new circuit boards for sale somewhere. I want to say OPGI. Check them out. I think that's where I saw them.

 

thanks i will try them

 

who is opgi? is that original parts group or someone else?

 

www.relineg.com. They repair circuit boards.