whats the trick to wiring msd window switch?

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Oct 21, 2006 | 04:35 PM

firebirdls1us

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From: savannah

whats the trick to wiring msd window switch?

I wired mine like the sticky up top said white wire to #10 on ecm,yellow wire to the fpss and also tried the yellow on the wot switch.......I even wired the red wire straight to the battery to see if I could get it to work I also cut the wires so it would read in 4cyl.mode.......... can anyone help please.......It seems it should be fairly simple but I don't guess it is..the one I have is #8956

Oct 21, 2006 | 07:36 PM

oange ss

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From: Texas

yellow wire goes to the ground acivation side of the relay

Oct 21, 2006 | 07:51 PM

firebirdls1us

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From: savannah

so the yellow don't hook to the fpss? When you say relay you mean the one that the fpss wire runs to?If you mean the ground side of the fpss...thats were I had it ...could it be something else keeping it from working? I even cut the white wire from the ecm so I was sure I had a good connection for the tach output

Oct 21, 2006 | 08:01 PM

oange ss

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then it sound like you had it hooked up correctly, only advice i can give you is to start chasing wires

Oct 21, 2006 | 08:05 PM

firebirdls1us

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From: savannah

Okay thanks for the help

Oct 21, 2006 | 08:35 PM

firebirdls1us

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From: savannah

Let me put this in just so you'll know........the way I tested it to see if it was working right was I took the nitrous and fuel line out of the bellow held them away from the car and with the car Ideling I arm the system and pushed the wot switch by hand and it shot notrous out the line. If I'm thinking right if the car is ideling and I have a 3000rpm pill in and pushed the wot switch by hand it should'nt haved sprayed correct?

Oct 21, 2006 | 09:26 PM

andypz28

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this is the diagram i came up with, white goes to tach (pin 10), and the rest should be pretty self explanatory. other than that, if you have it in 4 cyl mode, that should be good.