norman99zx9r

I just installed classic instrument speedo in the car with the SN77. I brought 2 wires from the transmission, where the pulse generator on the tranny is. One is a purple wire and one is a green wire. My question is which one is the ground, or does it matter? As on the SN77 box it has sensor ground. Thank you for your help.

performabuilt

iTrader: (25)

Its and tiny pulsed DC generator I dont think polarity would not matter as its and isolated circuit. However I would check with the cluster manufacturer myself first. Just in case.

LS1MCSS

iTrader: (18)

I was under the impression that it put out an AC signal.

performabuilt

iTrader: (25)

I havent measured one but they do have a single armature so it would seem impossibe to get a wave form from that So I would say pulse generator