minytrker

iTrader: (13)

I need to know how to hook up the stock gauges on a 72 formula. I have the factory sending units installed already and the hooked up what I thought was the right wires but the gauges stay pegged out. I also need to know what wire to run to the pcm for the stock tach to work.

RE AND CHERYL

iTrader: (31)

Do you have a good ground fromt eh engine to frame?

I beleive pin 10 from the PCM is the tach signal. The wire is white for sure.

Re'

minytrker

iTrader: (13)

yeah its grounded. I got the tach working but the water temp and the oil pressure are still pegged out. I have the right wire hooked up for sure on the coolant gauge.