No reverse lights
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No reverse lights
Hey guys and gals, I’ve got a weird problem on my 2011 Ford F-250. I can crank the truck, put it in reverse and no reverse lights (or may come on for about 2 seconds and go off). Or I can just turn the key to on ( without starting truck) put it in reverse and reverse lights come on and stay on. Any help would be appreciated! Thanks “D”
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Well I figured it out. I recently put extra auxiliary lights under my bumper for extra brighter backup lights. Spliced onto reverse lights. Today I took loose the extra lights and now they work. Guessing too much load for the relay.
Hotshot
Joined: Jan 2004
Posts: 19,760
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From: St Louis
Too much load, yes. Relays, no.
The BCM uses a "smart" detection circuit to monitor the loads on the FET driver circuit. If too much current is being drawn, the computer shuts down the circuit to protect it from permanent damage.
The solution is to use a relay to power your auxiliary lights. The relay's coil will draw very little additional current and shouldn't trigger the over-current protection circuit. Actual operating power that is switched through the relay would need to be sourced elsewhere, perhaps from a trailer circuit.
The BCM uses a "smart" detection circuit to monitor the loads on the FET driver circuit. If too much current is being drawn, the computer shuts down the circuit to protect it from permanent damage.
The solution is to use a relay to power your auxiliary lights. The relay's coil will draw very little additional current and shouldn't trigger the over-current protection circuit. Actual operating power that is switched through the relay would need to be sourced elsewhere, perhaps from a trailer circuit.
Thread Starter
|
New User
Joined: Nov 2021
Posts: 3
Likes: 0
Too much load, yes. Relays, no.
The BCM uses a "smart" detection circuit to monitor the loads on the FET driver circuit. If too much current is being drawn, the computer shuts down the circuit to protect it from permanent damage.
The solution is to use a relay to power your auxiliary lights. The relay's coil will draw very little additional current and shouldn't trigger the over-current protection circuit. Actual operating power that is switched through the relay would need to be sourced elsewhere, perhaps from a trailer circuit.
The BCM uses a "smart" detection circuit to monitor the loads on the FET driver circuit. If too much current is being drawn, the computer shuts down the circuit to protect it from permanent damage.
The solution is to use a relay to power your auxiliary lights. The relay's coil will draw very little additional current and shouldn't trigger the over-current protection circuit. Actual operating power that is switched through the relay would need to be sourced elsewhere, perhaps from a trailer circuit.
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