3rd gen ls1's
 

How did you guys get all of your gauges to work?
Jen-

Tach/Speedometer hooked up fine but I had to adjust settings with HP Tuners. If your old transmission didn't use an electronic signal you'll need a conversion box. I didn't need one so don't remember details on that. Everything else hooked up fine to LS1 harness, any particular ones you're having problems with?

None of them work... i have a 89 firebird formula... i just dont think the shop did it

First off check your fuses to make sure that's not your problem. Does your fuel gage work? It shouldn't have been touched at all during an LS1 swap unless they put in the 4thGen tank too. I'm guessing you've either got a power (fuse) issue or if the fuel guage is working maybe one of the connectors they wired isn't plugged together.

Just in case they really need to be wired, most of these are on connector 220 (white) and 230 (blue). These connector/pins are from my 98 LS1, other models may be different.

220 A - Red - Alternator
220 B - Tan -Oil Pressure
220 G - Grn/Wht - VSS (speedometer)
220 K - DrkGrn - Coolant Temp
230 B - Brwn/Wht - SES Light input
230 D - Wht - Tach Signal

they all should operate like stock.

stock, the temp and oil pressure gauges have a wire going to the sender.. they should now goto senders on the LS1.

the fuel and volt gauge should not have been touched.

the speedo wire should now goto the LS1 PCM, and be corrected in the tune for gearing and tire size.
the tach wire shoudl now goto the PCM, and be corrected in the tune for V8 output on a V8 tach, or V6 output on a V6 tach.


they should all work.

The temp sensor on the 99+ LS1 is not wired directly to the gauges. You may need a separate sensor to use your stock gauges. What year is your motor?

buy aftermarket circular or swap to a LS1 dash... thats how id do it

stock = stock thirdgen in my post.

not stock for the LS1 fbodies.

Im thinking of taking an ls1 gauge cluster and cutting it up and making a plate to mount everything from the 4th gen cluster in my 92 gauge cluster since my thirdgen gauges are all off. It will take some doing but I think it would work.

its a 00' engine

and the fuel works and i think maybe the volts but thats it.. my boyfriend has the car so i cant just run out and look at it...

well, in a nutshell, yes.. they should work.

what this shop did, or didnt do, i cant tell you.

i can tell you that if any of the gauges work, then its not the fuse thats the problem.

I just imagine they didnt think it needed hooked up...

This swap was done in 00' i believe right after the car came out... os i dont think anyone had even thought about doing some thing like this yet...

and i was thinking about just taking a 4th gen and putting it in my car.. but i still do not know if i want to go that far in a retro mod kinda look

remove the whole gauge area and then make a custom face plate. i know on my 85 IROC all the gauges came out as one big piece, just put LS1 gauges in place with a nifty face plate

personaly id just buy aftermarket or use LS1s as a temp

I think it would be cool to fab it up in this car... i dunno thats gunna be a decision.. i need a new dash anyways...

IROCs and firebirds have totally diffrent gauge clusters...

if you decide to keep the stockers, i can try to help you figure out the wiring to connect the stock gauges.

I wouldnt even know where to find all this info at

I will be facing this same problem.

swapping in a 2002 LS1 to a 1984 Trans Am. I understand I'll need to change my speedo to an electrical one, and since I'm doing this i'll match the tach.

I'd like to keep the dash fairly stock and just install the speedo/ tach into the dash. however, there's a huge PC board behind it all. If I cut this away I'll likely destroy it and then nothing behind it will work

i understand the sender wire from the 4th gen gas tank will work with my stock gauge.

How about hooking up the oil pressure, or engine temp gauge?

ay suggestions will be greatly appreciated!

Thanks,

-BV