수리 사례

2026. 6. 30. 작업

증상

Park/marker lamps won't turn off

처리 내용

I pulled almost every fuse from the fuse block under the dash without any success, but now that it is dark outside I was able to see something I missed when it was day: when I put everything back together, I turned the headlight switch to make sure everything was still working and I noticed that the marker lights became just a tiny bit brighter than they had been before. The only reason I could think of for them being dimmer was that additional wire was being used to complete the circuit that was either too thin or much longer than the circuit should be. From there, I realized that I should check the fuses in the "upfitter" fuse/relay box above the driver's head (at least 12 feet of wire away from the chassis interior fuse block). The bottom fuse in the right column is for the coachbuilder's logo on the control panel - it glows red when the other lights are on and when the engine is running, but somehow the relay was stuck closed and it was feeding power back to the marker li