Working on my '77 280Z, and had planned to replace all the old bulbs with LEDs from superbrightleds.com. Last week I replaced the brake lights, reverse lights, and front side indicators (whatever those ones on the side are called) with LEDs and everything worked great, new ones were clearly brighter, etc. Although right around that time the headlights stopped coming on, which I didn't pay attention to at the time (but in hindsight this should have been a warning maybe?)
Today I went to start on the turn signals. I replaced the front driver side bulb with an LED and it came on just fine, again noticeably brighter than the old one on the other side, great! (The dash is out of the car right now so I can't test turn signal flashing yet, I have the load resistors but haven't spliced them in yet). Then I replaced the passenger side one, and no lights would turn on. So I put the original incandescent bulb back in the passenger side, still no lights come on. Then I put all the original incandescent bulbs back in, removing all LEDs from the car. Still no lights come on. I did nothing else on the car between the install of the first and second front signal LEDs, it was maybe 10 minutes.
Multimeter still gives 12.28 volts across the battery, and the head unit/speakers work so it's not a complete electrical failure but something to do with the lights. I checked ground connections (in particular the two at the front of the car right next to the horns, which I tried wiring directly to the battery negative via some alligator clips) but they are all fine as far as I can tell.
I don't know what steps to take next. I have the full wiring diagram for the vehicle (http://www.atlanticz.ca/zclub/techtips/wiringdiagrams/F77ZCAR-WIRING1.pdf) but I don't know where to go now, any ideas?
Working on my '77 280Z, and had planned to replace all the old bulbs with LEDs from superbrightleds.com. Last week I replaced the brake lights, reverse lights, and front side indicators (whatever those ones on the side are called) with LEDs and everything worked great, new ones were clearly brighter, etc. Although right around that time the headlights stopped coming on, which I didn't pay attention to at the time (but in hindsight this should have been a warning maybe?) Today I went to start on the turn signals. I replaced the front driver side bulb with an LED and it came on just fine, again noticeably brighter than the old one on the other side, great! (The dash is out of the car right now so I can't test turn signal flashing yet, I have the load resistors but haven't spliced them in yet). Then I replaced the passenger side one, and no lights would turn on. So I put the original incandescent bulb back in the passenger side, still no lights come on. Then I put all the original incandescent bulbs back in, removing all LEDs from the car. Still no lights come on. I did nothing else on the car between the install of the first and second front signal LEDs, it was maybe 10 minutes. Multimeter still gives 12.28 volts across the battery, and the head unit/speakers work so it's not a complete electrical failure but something to do with the lights. I checked ground connections (in particular the two at the front of the car right next to the horns, which I tried wiring directly to the battery negative via some alligator clips) but they are all fine as far as I can tell. I don't know what steps to take next. I have the full wiring diagram for the vehicle (http://www.atlanticz.ca/zclub/techtips/wiringdiagrams/F77ZCAR-WIRING1.pdf) but I don't know where to go now, any ideas?