Yes, the lights are 12V and should work fine off the battery. Make sure you don't have a battery disconnect switch that's turned off. Check other things like an overhead fan, if your rig is equipped with one. If that works, check fuses....
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Mike, Sue, Sissy and Little Man
2015 Ford F350 Lariat FX4 6.7 CC DRW
2015 Eagle Premier 351RSTS
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