View Full Version : RPM Window Switch

08-28-2003, 10:58 PM
I installed a MSD rpm activated window switch on a 2000 Camaro SS to operate a NOS system. The nitrous system works fine with the window switch bypassed, but when in the circcuit it will never feed ground to the WOT switch. I double checked the window switch for power and ground and they are good, and tried different pills and still get nothing. I have a feeling I may not have the tach wire hooked to the correct pin of the PCM but I'm not sure. Any information on this would be very helpful.


08-29-2003, 10:31 AM
The RPM Switch has to be modified to a 5-volt square wave and once modified the both loops have to be cut to 4-cylinder application, and has to be connected to Pin 10 on the ECU.

08-30-2003, 12:13 AM
Thanks for the help so far. Does the switch need to be sent in for the modification or can this be done by me.

Thanks again,

08-30-2003, 12:36 AM
The switch will need to be sent in for the modification. Send it to the address below along with a description of what you want done on it and they will perform the modification.

MSD Ignition, Attn: Customer Service
12120 Esther Lama, Dock 5
El Paso, Texas 79936

MSD Tech1