A potential cause for your issue is a weak ground connection. Trace the white ground wire from your 4-pole back to where it attaches to the vehicle frame. This ground must be secured to a clean and rust-free spot on the frame. If necessary sand off the rust/dirt from that grounding point and reattach the white ground wire or relocate it a new spot.
If this does not correct the problem then I suggest you next test your existing 4-pole trailer connector on your Mazda to confirm it is functioning.... view full answer...
I am sorry to hear about your tailgate lock! If the L-bracket is not sliding into the passenger-side of the housing, filing down the handle, even if it solves the fitment issue, can make the handle frustratingly off-balance. For this reason, I recommend replacing the lock/handle. For your 1998 Mazda B2500, I recommend either the # PAL2300 (steel handle) or # PAL2310 (plastic handle). view full answer...
The Voyager brake controller # 39510 is sensitive. If even slightly off level it will misbehave. First, make sure the controller is mounted within the ranged specified in the instructions. The controller cannot be tilted or turned to the side either. If mounted outside its range or tilted/turned it can cause this issue.
The controller might also be sensing a short. Check the vehicle and trailer side connectors and make sure they are clean and free of corrosion inside where the wires attach... view full answer...
A 4-pole wiring harness carries stop, turn and tail light signals only, and does not connect at all to a vehicle's reverse light circuit. Since this custom harness uses connectors specific to your truck and simply plugs in, it sounds like there could be a short caused perhaps by a damaged connector on the vehicle. This could account for the harness interacting with the truck's reverse light circuit.
Given the truck's 26-year age it is quite likely that the issue is simply corrosion in... view full answer...
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