My Heiden Tuning regulator/recitifier arrived & I'm attempting to install it. It's supposed to be plug & play into stock wiring harness. Heiden rectifier plug matched stock rectifier plug exactly. Same number of wires in same position into the harness plug. The Heiden regulator plug has two wires into the plug (green, brown) but my stock regulator has 3 wires into the plug (black, yellow, red). There's also an additional red/white wire outside the plug. I'm scratching my head. I connnected it up anyway and powered on the bike but blew a fuse immediately. Any ideas? Attaching photo. My XS2 regulator just had the brown and green wires but my 75 has a lot more wires.