Seatbelt chime and light go off even when belts plugged in.

either failing seat switch or female buckle ---check wiring to both

Look under the seat and see if the plug is unplugged to the switch. You may have a break in the wire as when you click your seat belt together it completes the ground and turns the chime off.

somehow I was the annoynmess person with the question about the door ajar and a seatbelt alarm that we disabled, and odometer quitting the radio stayed on well it was just a plug and the odometer speedometer all that works now, but the radio still stay on with a key out of ignition, and now the AC don't cool

There is another legitimate and easy way to disable seat belt chime. Radio is supposed to stay on til door opens. That is correct

YOU CAN' DISABLE THE ALARM.IS PART OF SRS SYSTEM.BUY FROM YOU LOCAL DEALER BELT BUKAL ONLY AND REPLACE.IS EASY AND LOW COST.

Pull the fuse it won't affect the seatbelts from working correctly. otherwise you have to disconnect each seatbelt lock to find the defaulted lock. As for the airbag light; do you have the type that can be turned off with a key? It may be permanently turn off and needs to be turned back on with the key.

fastening seat belts is not always the answer as some sensors need weight to cancel the light after the seatbelt is fastened. best have it checked out by an auto electrician as the seats may have been changed and the wiring not properly connected.

sounds like your seatbelt return wiring might be loose check electrical connections and try to pulling the the seatbelt in and out rapidly to free up return mechanicism good luck

sensor in the seat belt bukle needs to be replaced

rear seat belts lock if you pull them out all the way and put them ALR mode. Automatic Locking Restraint. It will ratchet as the belt is rewound. This is for holding a child seat in place.

Is this your issue?