Steve1950
New Member
- Joined
- Nov 30, 2020
- Messages
- 15
- Reaction score
- 2
- Points
- 3
- Location
- san diego
- Vehicle Year
- 1989
- Make / Model
- ford ranger
- Transmission
- Manual
89 Ford Ranger; no brake lights turn signals or flashers. I pulled flasher unit out probed for 12v no 12v with engine off. I am assuming one of the contacts should have 12v so flahers can work when vehicle is not running. I don't get 12v with engine off. Start the truck up and I get 12v to the flasher unit. That just doesn't seem right to me. I have a generic wiring diagram and it says hot at all times to the flasher unit.
Also my generic wiring diagram shows the same hot or 12v going to brake light switch. So I check for 12v at brake light switch. Guess what, 12v just like it is supposed to have and depress brake pedal and 12v passes to other wire. Brake lights flashers and turn signals still don't work. Not surprised I didn't fix anything. Looking at the wiring diagram it looks like everything passes through steering column multifunction switch. I suspect this switch is bad. Before I go through the trouble of replacing that switch anyone have any ideas? The 12v at flasher only when running has me baffelled. I changed the multifunction switch several years ago so maybe my part failed.
Also my generic wiring diagram shows the same hot or 12v going to brake light switch. So I check for 12v at brake light switch. Guess what, 12v just like it is supposed to have and depress brake pedal and 12v passes to other wire. Brake lights flashers and turn signals still don't work. Not surprised I didn't fix anything. Looking at the wiring diagram it looks like everything passes through steering column multifunction switch. I suspect this switch is bad. Before I go through the trouble of replacing that switch anyone have any ideas? The 12v at flasher only when running has me baffelled. I changed the multifunction switch several years ago so maybe my part failed.