- Joined
- Oct 14, 2004
- Messages
- 5,001
This bronco doesn’t have a heater so when the harness was installed I used the 20 amp heater circuit/wire to power 3 gauges and the switch that turns on the relay for the fuel pump. Has worked fine for several months. All of a sudden it is losing power prior to the fuse box, it also lost power to the turn signal fuse. Every so often just sitting there power on the 20 amp heater circuit will start switching on and off without touching anything, sometimes it will stay on for a few seconds. Also while power is there if you use a turn signal the power on the heater wire switches on and off. There is nothing in the centech directions that helps with troubleshooting where in the harness to look for this. Any ideas appreciated before I rip into the harness. It seems the problem is in the harness prior to the fuse box
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