Hi all! I'm currently wiring 78k controls into a 73k system I have most of it figured out but I can't seem to make the tail light light up when the key is on... It works in the third position of the ignition switch but that seems to be the only time the schematic I have says brown/white wire for the tail but I neither know where to tie it into the 78 controls or where the wire actually is as it does not seem to be up front... I have a left over green red wire that tests ground from the right hand controls and I've yet to try hooking up the headight assembly I remember on the 78 that there are 2 ground straps on the headlight ear bolts does this relate to my problem? Anyone done this before?