01 Screwed Up!

Well to make a long story short I screwed up.  I own a 2001 F150 Supercrew.  I mounted two amps and a 0.5 farad capacitor to a 1/2'" board and stratigically placed seven screws into the board to secure to the rear wall of the cab.  The only problem is the wall I thought contained hollow voids, didn't!  So I now have seven stratigically placed screws sticking out the backside of the cab.  I was wondering how to seal the screws to keep water from weeping into the cab.  I can't get my hand down between the cab and bed.  I thought I could take the bed bolts off and gently slide it back far enough to get my hand in to seal the exposed screws.  I hear that taking the bed bolts out are EXTREMELY difficult, if not impossible.  Anybody know of a sealant that could be sprayed onto the exposed screws withought taking the bed loose?  Maybe  some kind of sealant with an 12" vinyl tubing attached to reach the screws?  I figured since I have already screwed the pooch I might as well utilize the holes I have put there.  I mean as opposed to taking the screws out sealing the holes and making brackets to fit the actual hollow frame member halfway up the cab just below the rear window.  Any ideas would be greatly appreciatedCharles Abbott

You'll need an impact wrench to get those bed bolts loose. Short of removing the bed, it's gonna be hard to do much of anything. You might use some rubber washers behind your board. Use some caulk or other type of sealant, windshield adhesive is the best but it's pretty  permanent, behind the washers and in the hole before you put the screws through.

I would strategically place some silicone on the inside of the vehicle where it will hold up better than exposed to the outside elements. If the box can be made to move, then I would do it on the outside as well. If the box can't move (or refuses) then take some silicone and smear a good amount of it on a piece of 1/2" plywood strip and smear it on the area around the mounting hole.Top Secret, I can tell you but then my wife will kill me.

tape a q-tip to an end of a piece of thin conduit to put the silicone on.  be sure to wet the qtip a little bit before you put the silicone on itPioneer PEH-9660mp

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Tough luck situation....but a very clever thread title!