On my E450 chassis the #70 fuse in the engine compartment fuse box is empty. In the Ford owners manual it shows that for the "stripped chassis". While I was in there I checked the #72 fuse marked "Cigarette lighter/power point". I was good also. Next I found another fuse box down by the brake pedal. It had fuse #39 marked "radio". I was good.
Starting to get over my head on this fix.
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