wolf39us

ok so I'm doing a little research, in my 87 GT, the gas gauge doesn't work at all, the tachometer is WAY off, the speedo needle bounces at low speeds, my battery volt level def is not working lol

I have an 85 mph speedo

now my question is, all over the internet, (ebay and such) there are 87-93 instrument clusters

do most of these clusters all come with the gauges and such??

I'm very much noobish so I have no idea...

cuz if the clusters normally contain all gauges then that would fix a whole lot of the problems I have (assuming the wiring isn't the problem of course)

oh and I also heard that if I upgrade to a 140 MPH cluster that I will need to adjust the speedo to work with my car...is that true too?

mjr46

normally the cluster will have all what you need unless someone has robbed what you need out of it

wolf39us

so I found a diagram to work with..

anyone know if it is accurate?

http://www.stangnet.com/tech/cluster87-93.pdf

FivePointOhh

looking off the chilton i have looks pretty close. i'd say use it

Dave5point0

Your speedo may be bouncing because of the teeth on the gear that goes into the trans, the gas could be the sending unit, and the tach is a good question. Might as well buy a 140mph cluster and see if it solves any problems, and when it doesn't, then do some diagnosis.

wolf39us

well if I knew what voltage levels should be at all these different wires I would be a much happier person lol...I could easily use a multimeter..

but that is useless unless I know what the voltage should be

CantStopTheFox...

Keep in mind the 87-89 and 90-93 clusters are different...it shows it on that .pdf you posted though

wolf39us

yes I am definitely aware

what I'm confused with tho...is that on the left...there are pins 1-14
then on the right...there is a second column with pins 1-14

are there two clusters in the back or something?