I need some help wiring in my MSD Window switch. The wiring isnt making sense to me.

Red= Power (obviously)
Black= Ground (again)
White=tach signal (got that taken care of)
_____________________________________ Heres the confusing part:

Gray= Normally closed, This wire will remove the ground source at your desired On rpm, and complete the ground circuit at the set Off rpm.

Yellow= Normally open, will provide a ground source at your desired On rpm, and remove the ground at the set off rpm


so what the hell am i wiring these to. im trying to figure it out but the wording is tricky.

 

only way to test it is get the whole system hooked up and touch the wire to see which one acitvates the system... if its anything like my meth injection kit your going to hook it up to normally open... one basically is telling to to acitvate below the set rpm and the other will tell it to activate above the set rpm

 

oh ok, but im using the ground wire off the nitrous solenoid?

and its one or the other not both?

 

no 100% sure and correct its one or the other. Ive never hooked up a nitrous system so unless I have it in front of me im not sure which wire would work... depends on the wires for the msd if they complete a circuit once triggered or grounded

 

you should PM slowion2 on here, hes got the MSD window switch on his setup

I had the MSD switch when I first got my Zex kit but burnt the bitch up trying to install it

I'm almost positive that the gray wire is not used at all and the yellow wire is actually what completes the circuit to activate the silenoids.

 

you got the wire diargam on youre coil on plug? trying to wire my buddys msd window switch and i'm not sure of the wiring on the plug cause my car runs on the pack not the cop.

 

For your nitrous setup, you want to connect the yellow wire to your system. The system completes the circuit at the desired "window".