Forum Discussion
jolooote
Jun 02, 2019Explorer
Had similar problem years ago in a Chinook. The coach, brake and headlights were powered from an additional battery. This battery was 'Supposed' to be charged by the engine alternator. The automotive relay that was 'Supposed' to parallel it to the engine battery while driving had failed. SOooo, that battery was not being charged while driving. Eventually, it went dead. No lights as you describe.
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