Haydenh
Junior Member
- Joined
- Oct 10, 2023
- Posts
- 26
- Reaction score
- 46
- Location
- Southern Utah
- First Name
- Hayden
- Truck Year
- 1987
- Truck Model
- V30
- Engine Size
- 6.2
Hello All,
I searched the forum and couldn't find the exact issue my truck is experiencing so I thought I'd start thread to see if I can get some clarity.
1987 V30 with the 6.2 and a service body. The previous owner swapped the incandescent brake/turn signals on the service body to LED replacements but otherwise nothing strange. The issue is: When I turn on my headlights I get no turn signals flashing (front or rear) and my brake lights barely light up when depressed and the turn signal indicators on the dash are both lit up (right brighter than left) but do not flash either. When I turn on just the running lights, I get something similar, except then my left turn signal will flash but it is not lit up like when headlights are on; Right turn doesn't flash and is lit up on the dash.
To me it seems like I might be getting some sort of backfeed from the brake/running light circuit into the turn signals or something like that? Has anyone experienced something similar or does anyone have some possible insight as to what I need to look at closer/ test? Electrical isn't my strong suit like mechanical is, but I can diagnose well enough with a meter/test light.
Any help or advice on where to start looking would be appreciated!
Fuses are all good, the only other electrical that doesn't work on the truck is the interior dome light (new bulb and fuse) and the horn (good fuse).
Thank you in advance!
I searched the forum and couldn't find the exact issue my truck is experiencing so I thought I'd start thread to see if I can get some clarity.
1987 V30 with the 6.2 and a service body. The previous owner swapped the incandescent brake/turn signals on the service body to LED replacements but otherwise nothing strange. The issue is: When I turn on my headlights I get no turn signals flashing (front or rear) and my brake lights barely light up when depressed and the turn signal indicators on the dash are both lit up (right brighter than left) but do not flash either. When I turn on just the running lights, I get something similar, except then my left turn signal will flash but it is not lit up like when headlights are on; Right turn doesn't flash and is lit up on the dash.
To me it seems like I might be getting some sort of backfeed from the brake/running light circuit into the turn signals or something like that? Has anyone experienced something similar or does anyone have some possible insight as to what I need to look at closer/ test? Electrical isn't my strong suit like mechanical is, but I can diagnose well enough with a meter/test light.
Any help or advice on where to start looking would be appreciated!
Fuses are all good, the only other electrical that doesn't work on the truck is the interior dome light (new bulb and fuse) and the horn (good fuse).
Thank you in advance!