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2 things to look for. the switch on the dome light itself and the door switches. These switches make a ground connection so the bulb will light. The dome light switch may be faulty allowing current to flow all the time. The door switches do the same with one exception. The wire going to each door switch can become pinched or come in contact with a sharp body part causing the dome light to stay on. Check the obvious first before you start tearing the interior panels apart.
If it's after market, just disconnect the power source. If it's factory, good luck! You might verify when you lock with the key, you unlock with the key. Don't reach through the window and unlock. (if window is down!) A lot of cars are integrating the alarm and everything else through the radio. Have you changed or upgraded your radio lately? If so , you will need to get new code for the radio to match the car system. Really hard to guess on an alarm system. Sorry!
See if you have power coming out of the master power window switch when a button is pushed down. Remove a door panel and check for power at the window motor with the switch pushed. If you do not have power it could be the master switch. Good luck.
This could be a combination of electrical issues, although i feel that the timing is coincidence in this case. When the combination is elec. windows, wipers, and dome lights this is indicative of the GEM module located behind your radio. The GEM (generic electronic module) is an electronic body control module that regulates electrical flow through a number of accessories.
These factory module boards are notorious for acting quirky by failing to ground intermittently until failing completely. I would be cautious in replacing ignition switches, locks, etc. as the issue can be also compounded by corrosion of the main battery ground wire in the engine compartment and which can cause frying of your under dash wiring into the main wiring harness which can get expensive (i speak from experience having had the exact same syptoms). My issues were that these symptoms occurred only in full ON. When in key BACK ACC mode, they disappeared.
New price for one of these modules is around $280-$300 and easily replaced.
Whn the window does not work try this, Turn on you dome light. Press and hold the window button. Does the dome light dim? If it does it is likely a physical resistance in the window track. If it doesnt then there is a break in the window circuit. Have you tested the switch. The switch could cause an intermitten concern. The wiring of a 1999 f150 the passenger side switch could cause a concern even using the drivers switch. Check both switches using the dome light trick. If you have a test light place the clamp on a ground and the tip to the TN/LB wire and the WH/YE on the driver side switch operating it in boh up and down positions. Each wire should go power in one postion but not the other. The passenger side wire colors are YE/RD and RD/YE. Good luck
the wiring for the dome light, door ajar and radio is most likely crossed with the brake light wires causeing it to turn off power or on when pressing the brakes giving electricity to the lights and then it could be cutting off the power to the radio