2-step wiring; need help

ioeth

New Member
Jan 6, 2009
1
0
1
Raleigh, NC
So I'm trying to wire up an MSD 2-step launch control module into my 1995 GT and I'm having a problem finding the correct clutch sensor wire to attach to the latching relay.

I looked around under the dash and checked in the technical service manual for wiring diagrams and figured that I should be using the light blue/yellow wire that goes from the clutch pedal position switch back to the engine computer. Is this the right wire to use?

If it is, then I'm having a different problem. The other wire in that connector is a gray/red wire, which is supposed to come from the engine computer. I think that this is the power wire for that switch and that when the clutch pedal is depressed the +12v goes through to the light blue/yellow wire. Problem is, I checked the gray/red wire with a test light and when the car is on, there is no +12v coming from it! What's the deal, shouldn't the gray/red wire have +12v on it whenever the car is on?
 
I haven't worked with this yet, but from my experience a switch is not always switched power. It can be switch gnd. So if you check the volatage of either side there will be no voltage but when you connect them the switch wire will see gnd and that is the switch. Does that make sense? I don't explain stuff very well sometimes.