hookup for rpm

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Oct 21, 2007 | 12:36 AM

silentd

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From: Bensenville, IL

hookup for rpm

i have the msd rpm window switch and i dont know where the one wire goes to monitor the tach, or rpm... help please

07 ss/sc

bump anyone??

Last edited by silentd; Oct 21, 2007 at 12:36 AM. Reason: Automerged Doublepost

Oct 21, 2007 | 02:04 AM

IonNinja

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From: AZ

search in the how-to section for shift light installs...I know in those threads they note which wire to tap for RPM.

Oct 21, 2007 | 04:11 AM

silentd

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From: Bensenville, IL

they show just to get a reading. i need the negative and positve terminals on the coil pack... i think its the red and the black one and not the middle ones...

Oct 21, 2007 | 04:35 AM

ItalianJoe1

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From: Miami, FL

You should be able to use the signal wire and a common ground right? I'm not sure about the MSD one, but thats how most window switches work.

Oct 21, 2007 | 05:01 PM

IonNinja

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From: AZ

Quote:

Originally Posted by silentd

they show just to get a reading. i need the negative and positve terminals on the coil pack... i think its the red and the black one and not the middle ones...

the only wires that you need to tap your car for with the MSD switch is the tach signal and the throttle position sensor so not sure what you are looking for...