Gauge Swap Troubles?

Aight im trying to put a 90 SI gauge cluster into my 91 stn........now i took my old one out to reveal all the wires, there is no wire for a tach and i was told the wiring was already there.....now what do i have to do to get this swap to work right? thanks , peace:bloated:

You should just unplug the old STD cluster and plug in the SI one and it should work... It worked on my hatch.

call me stupid, but theres no tach wire........the only thing that fits in the tach spot is the wireing for the temp. and gas.......ill look again

You should just unplug the old STD cluster and plug in the SI one and it should work... It worked on my hatch.

as did mine, and 500 other people... ;D

the tach wire is one wire in the plugs. try pluging it all in and see if it works. :D

aight, imma go to my car now

hell, i put a wagovan cluster in my car and that worked hehe

ok guys, i got it to work, thanks for the help.....the only thing is the MPH does'nt read write now....when im at 0mph the needle is all the way down past the zero.....its weird

the needle just to be adjusted thats all