I'm having a problem reversing in my '83 242DL. The problem is, everytime I put it in reverse, the #12 fuse blows and the engine dies and won't start back up until the fuse is replaced. It did this maybe 2 times before after letting me reverse for a bit, then was fine for a while, and recently started just blowing the fuse everytime I put it in reverse. I tried taking out the reverse light bulbs thinking maybe they were shorting something, but that didn't work.

The thing really confusing me is that the #12 fuse being blown keeps the engine from starting when the manual and fuse box door list its functions as: Backup lights, Relay, window lifts, Heated driver's seat, Air conditioning. Is it possible some wires are crossed somewhere? Where would I look for that? The #13 fuse does fuel injection, so maybe it's crossed with that circuit somehow. Thanks.