ive read instructions to fit pro performance screaming eagle tacho but has anyone out there done this ,I took to my auto elec mate who is switched on he read instructions an said instructions are shit he said need bikes wiring manual ,ive downloaded that showed him he said ill have a gander cripes its only a tacho how da heck can u do wrong he said something about engine pulse ecu or ecm fuk I just want it to work can it really be that hard any help on this matter appreciated SHINGLES

I hear yah man.... If something's going to be screwed up on my bike "I" want to be the bastard that did it. I recon I always take extra care cause its my life on the line and I have skin in the game, is the motivation to get it right is high.

Too often I have had a shop screw up the basics (I only take the bike in once every 10 years or so)