This guy makes a shift light that hooks up with only three wires, and you can
SET the RPM's in increments of 10...no pills required...works on anything from a 2 cylinder up to a 16 cylinder...I also use it as a "rpm window switch" for my N20...as it actually will run two shift lights...There are many Vipers running this box, as this guy used to own a GTS and knows alot of us.
Basically...for this box, you tie one wire into one of the coil packs, tell the box you're running a two-cylinder, and at whatever RPM you set it to, the box switches the "ground" to complete the 12V circuit, and walla...shift light blinds you.
Email him at
[email protected] ... I can help anyone with the wiring, installation, set-up over the phone...It's very easy, the box is super small (fits behind my PCM cover) and the light itself has four SUPER BRIGHT LED's...I have zero problems seeing it in the brightest of daylight...
Here's a pic of the set-up...
www.hightechspeed.com
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