okay so i bought a 87' 944 S last monday nov. 24th. The person that owned the car before me installed a silly auto zone tachometer. He said the gauge cluster "was" working before the tach was installed, but I dont know if I believe it. Anyways, where should I start?
The tach was wired to the fuse box, i've already ripped the tach out and unwired it all. however, I havent figured out how the oem gauge cluster works (ie. whats connected to it). Is there maybe a sensor or something that might be left out? thanks in advance...

-James

 

Someone throw up a diagram for this guy. I hate it when posts go unanswered! First step would be to pull gauges and see if you have some corrosion build up back there or not. Should be a bunch of philips screws in and around the gauges. I wish I was there I have pulled the dash on my car at least 20 times. I could have it out for you in like 2 seconds.

 

there are 3 connectors that plug into the back of the cluster. see if they're connected.

87951
95sl320 dd

 

http://www.clarks-garage.com/shop-manual/elect-07.htm

Do you have those 3 connectors?
Do you have factory wireing manuals?

 

yes I have the factory manuals. and I havent gotten around to working on the car since school has me so bogged down; finals and whatnot. I plan on pulling it out this weekend if I get some free time. lol catfood, i wish u were here too!

-James

 

also, does the steering wheel have to be taken out to pull the cluster?

-james

 

Removing the steering wheel makes it a whole lot easier but not a have to do!Also the tach is run buy one of the reference sensors,make sure he did not remove that also!!

 

S has one reference sensor.