2001 Ford Ranger

Hi frank sewald. Welcome to the forum. Have you checked the fuses under the hood and inside? The wire for the radio's memory circuit is tied into something that is always on such as the horn or dome lights, and the radio's main switched power is often tied in with other things that are switched off which includes power windows.

Caradiodoc

Hmmm. What do you mean by "dome light comes on when I stop."? Do you mean they are working properly when you get out of the truck or they turn on when you press the brake pedal?

The only thing the radio, windows, and wipers have in common is one of the contacts in the ignition switch, but it would be quite the coincidence for that to act up at just the same time you're working on the radio.

Caradiodoc

Believe it or not, I had exactly the same problem with the dome lights doing that on an '89 Chrysler Fifth Ave. But after nine attempts to solve it, the problem turned out to be a one-of-a-kind defect that should have caused the fuse to blow except someone else had been in there earlier and modified the circuit. (Turned out to be a bare wire going to the passenger's visor mirror light. The visor would move forward 1/4" when braking and short that wire to ground, and move back when accelerating. Someone had found the circuit with the problem but instead of continuing to the defect, they cut and switched the feed and ground wires, so the shorted wire was now acting as a door switch in the ground circuit instead of a short in the feed circuit).

In your case, I would be looking at the door switches first. On some Ford models they are built into the door latches. If we assume that problem and the window problem are related, suspect the wires between the door hinges. Pull the rubber boot back and look for broken or frayed wires. Each front window switch will have its own feed wire, but both window motors go to ground through a common wire on the driver's door.

Caradiodoc