Guys, can someone explain how you hook up a MSD window switch. I plan on adding one to my Zex installartion in the next month. I would like a little installtion and background info on the switch before I buy it.

 

I called MSD and they mailed me the wiring diagram/schmatics in 2 days. The number is 915 855-7123. I have it hooked up to a Zex kit also. Its a great kit, possibly the best. Good luck with it.

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`96 TransAm with 125hp Zex kit and tons of bolt ons.

 

Can you tell me just really quick what the switch hooks up to? How does it know what rpm the engine is @?

 

The Tach.

Dave

 

Black wire goes to ground,red wire goes to 12volts(when key is in run position),yellow wire hooks into nitrous circuit relay, and white wire hooks into PCM's tach wire or the tach input of an MSD 6 box. You need 2 rpm "pills" one to turn the nitrous on and one to turn it off just before you shift.Remember not to use the window switch to fire the solenoid directly It's only rated for about 1.5 amps and the solenoids draw about 7.5 amps each.
Skip

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Michigan Skip's Flamed 95
95Z28, K&N TPIS 150hp NOS & 27mpg!
MSD 6AL, Window switch,Ford SVO 24# injectors,
2.73's (3.42's to come) Edelbrock headers, Flowmaster exhaust
BMR SFC,LCA,STB

 

OK. Thanks for the info. One more question! How would I wire it then in regards to the apmerage? What way is there around wiring it to something else. I thought hooking it up to the solenoid would turn it on and off? I'm confused.

 

use the window switch to control the relay and the relay controls the solinoid.

 

93LT1 If I had your e-mail address, I would sent you a diagram of how to wire in a relay.
Skip

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Michigan Skip's Flamed 95
95Z28, K&N TPIS 150hp NOS & 27mpg!
MSD 6AL, Window switch,Ford SVO 24# injectors,
2.73's (3.42's to come) Edelbrock headers, Flowmaster exhaust
BMR SFC,LCA,STB