My 99 f350 when turning headlights off only the
headlights turn off. Everything else stays on. I have
to remove fuse 4 in the under the hood fuse box for
everything else to turn off.
I'd mind the battery (newer then 5) and it's connections both to the post ....the bolt that connects to the chassis and the bolt that connects to the engine...use brand new 80 amp cables if needed~
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