98 wrangler power distrabution center problem

I have a 98 wrangler with a few problems.I keep blowing the F 19 fuse in the power distrabution center under the hood cant figure out what it does dealer wont give me an answer can anyone tell me what this fuse controls.also trany bangs when I put it in reverse have not changed the fluid and filter yet any sugg.....

Fuse 19 in the PDC feeds the A/C compessor clutch relay which in turn powers the A/C clutch. You should be able to disconnect the wire at the A/C clutch and see if the fuse still blows. If it doesn't blow with the clutch disconnected I would assume you have a bad clutch. If it still blows with the clutch disconnected I would look for a short to ground on the feed wire to the clutch or possibly a bad relay.

That's the same wire that runs between the high pressure and low pressure cutout switches. While I've never heard of a switch failing to ground I suppose anything is possible. You need the wiring diagram to chase down the short.

Nope. It runs from fuse 19 through the A/C relay directly to the A/C clutch. The wire is Dk Blu/Blk.

While I've never heard of a switch failing to ground

There are no switches involved.

You need the wiring diagram to chase

Not really. The wire in question runs from the A/C relay to the compressor clutch, nothing else in the circuit. Should be easy to check with an ohm meter.