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-   -   RPM activated switch (https://www.racingjunk.com/forums/showthread.php?t=23607)

dparker 03-27-2009 09:10 PM

RPM activated switch
 
I installed a RPM activated switch on my dragster, since I have a electric shifter with a spring loaded solenoid. But after I installed the switch my tach quit working. If I disconnect the power wire from my RPM switch my tach works. Has anyone run into this or do I have a bad switch.

zipper06 03-28-2009 10:06 PM

Sounds like a switch problem, we just put a msd 8956 in the Biscyne to control the newly installed 200HP nitrous, and it didn't change/anything else electically. Do you have all the wiring diagrams for MSD? There is a download availably at their site for every wiring diagam, in a PDF format. I couldn't install a push bottom on their systems without that download :oops:

Zip.

Tod74 03-28-2009 11:19 PM

I used to have a book that had every wiring diagram in it but it got ruined...only cost 5 bucks.

dparker 03-29-2009 07:57 AM

I went to the MSD site and the instructions they have are the same as came with the activated switch. I guess I'll just have to call them Monday and talk to a tech.


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