wiring harness

Hey everyone! I've been a lurker here ever since getting my ducati, but couldn't find the exact thread I needed so I figured I'd make my own post. I'm currently installing the SpeedoHealer v4 on my monster, and right off the bat there was a couple discrepancies with the manual vs real life...

The turn signal switch and horn button on my 2000 Monster 750 Dark stick like crazy, so I am hoping to splice in a new set of handlebar switches (may as well do the right side while I am at it, to keep them matching in appearance). Of course, the wiring harnesses on my replacement switches...

My fender eliminator mount broke off by the welds while I was riding causing my taillight to break. Ordered an integrated tail light and wired it to a new 5 way waterproof connector but only the left and right blinkers worked. Checked the voltage on the female end to find the brake (white and...