Raptor shift light install...help plz!
I tapped into the tach wire near the pcm, grounded it near the glove box, finally used an "add-a-fuse" to get power from my wipers. Shift light works like a charm now. I'm shocked at how off the tach needle is, cause I set the shift light for 5.8k and the tach needle reads a little past 6k before the light comes on...huh!






