i recently did a 350 transplant on my 86 z28..(it was a rolling chassis)....went with a after market dist. and a holley 650 carb.....for the life of me i cant seem to find the tach wire to plug into my dist...or the temp or the oil psi for that matter...If Anybody knows how to get an Rpm/oil psi/engine temp without going the autometer route plz tell me

 

Im not sure on the oil etc. but for the tach u should be able to run it of the coil. Which wire I do not know. But this is what I did on my 90 Tbird.

Jay

 

yeah....i have a rpm wire on my distributor... but i have no idea on how to find the wire that goes to the gauge cluster

 

dude, I think your guage cluster is broken lol

 

it aint broke.....i just cant find the wires to hook the stuff up

 

If you look in a firebird auto catalog (like haynes, chiltons ect) there's a wire diagram in the back you should find the color wire that goes to your dist from the tach my guess is the same color all the way thru...

 

After my last post I saw my Haynes Manual so figure what the hey...the best I figure this out is on 89 and earlier 5.0/5.7 w/ TBI coming out of the Coil is a white wire (to istrument cluster)
then a 2nd white wire (along with brn and pnk) goes into the powertrain control module(cpu?)
then another pnk to your starter switch
on the tach side there's the white (to coil) and blk/whit to ground
hope i helped some but if I confused ya it's page 10-21(coil),10-23(tach) in the hanyes of 82-92 firebirds pn#79019 swing by an Advance Auto or whomever else sells haynes and check it out(or buy it it's my bible!)

 

heh.....thats what i was afraid of.........the car was gutted...originaly a v6 tbi...most of the wires had been cut off when i got it....plus i dont a a ecm....it wired up like a 70s camaro..........all i know is there is a big bundle of wires next to the air conditioner box that have been hacked up

 

Pull the cluster, trace the circuit board from the rear of the guage that you are interested in, to the connector socket, note the pin number, cut the appropriate wire, run a new one for each guage.

There will be the original wires left as extra weight/mess, but this will likely be the fastest fix.

 

then grab the bundle of wires and wiggle em see if the rip-em-gauge cuts on :0) just an idea... put cctv's got the right idea have fun!!!