Thank you for taking the time to read this I have a 75 280z I have rebuilt the combo switch and even bought another to test. Only my blinkers will work. I have test all lines from headlights to the combo switch. Using the FSM no shorts. If I run a hot wire from the battery to the fuzebox red wire. And flip the headlight switch everything will turn on just fine. I can’t turn the lights off unless I disconnect the Hotwire. So that tells me all the lights and wires are somewhat working. I can’t figure out what is wrong. When the hot wire is plugged directly to the fuzebox high and low beams work. If I use the combo switch it will turn off taillights only. I’m trying to install led headlights I have but need to have this working first. I bought some relays that I will add even though I don’t think I’ll need them as much with led. Any help willl be appreciated. Also if anyone is looking for combo switch I have an extra.