Just a quick question. I'm gonna be adding a 4 pin connector to my '74, I'm assuming I can just splice it in but I wanted to check. EDIT: I think I found my answer in the FSM. For the class 1 and 2 package it looks like I can have up to 4 taillamp bulbs on the trailer and they say to use heavy-duty flashers. I was worried about messing something up seeing how the lighting runs through the turn signal lever.