Another weird question..
As far as the fuses go I've had & seen other F series of this vintage get their cargo &/or high mount brake light short due to broken lens, get wet, blow its fuse & display the flashing OD light which is why I mentioned it. But the tranny went into limp mode as a result (not your described problem, apparently). Replacing the fuse cured it. Since It happened on a reg basis, I carried a box of em' after the third lens replacement.
I've replaced my tail lights with submersible lights (only thing I had available at the time). I had a major short in my entire light system right from the get go, The original block (light switch in dash) was burnt, and I've replaced it.
https://www.ford-trucks.com/forums/4...ockspring.html
This deals with the airbag.
https://www.ford-trucks.com/forums/6...l-air-bag.html
Hope it helps.
https://www.ford-trucks.com/forums/4...ockspring.html
This deals with the airbag.
https://www.ford-trucks.com/forums/6...l-air-bag.html
Hope it helps.








