I'm fitting one of these shift lights and would prefer to wire the power from the dash as well as the tach signal because the tail wire off the back of the shift light is so thin I don't fancy using terminal blocks or crimps off the stereo loom.
Looking on the circuit diagram is just confusing me. I'd guess either green or brown/yellow was switched live and black was negative, but I only get one chance before the magic blue smoke appears and the electronics genie says "you've fcuked that up mate".
