The main unit red light is constantly on and the chime does not work

Take it to a qualified repair shop , stop letting your husband work on the car's .

Bad lamps in the panel...common issue for this set

I took my a part and the plug is lose so we pull up on it and put a zipper tie and now it works fine

It's called delayed acc. power. It should shut off as soon as you open the door. Unless the red stereo wire is hooked up to constant power. You may need to check with a test light.

CONSTANT CHIME NOISE IS WARNING YOU LEFT HEAD LIGHTS ON WHEN ENGINE OFF.SO YOU WONT RUN DOWN THE BATTERY.

Epson -R 230 desktop printer. Two Red lights blinking constantly on the control panel (beside main switch). unable to print.

From User Guide: Interference from a similar unit operating nearby: a) simply remove the batteries from the push button and door chime units and rest for 10 seconds, this will erase memory b) Insert the batteries into the push button and door chime units, the door chime unit will give 2-beeps to indicate that it is ready for the new registration code. Press the Push Button once, it will generate a new operation code randomly and send a wireless ignal to the door chime unit and it will sound to indicate that new operation code is registered and memorised.
(Note with this unit SX85R the door chime is mains powered, not battery powered, but above instructions are the same)

Have you tried turning one of the thermostats off.? They are both talking to the same unit and they may be arguing with each other.

Check to make sure you don't have anything that would impede the connection at the battery terminal

Keep in mind that there are always two fuses in any vehicle that provide power to the radio. One fuse is for switched power, one for constant power. Both fuses need to be good before the radio will work. Often one of the fuses, especially the constant power fuse, is shared with other electrical circuits and may not be labeled as a radio fuse. Check all the fuses in the vehicle, including any fuse box under the hood. See if any other electrical systems in the car aren't working, especially the dome light, cigarette lighter, door chime buzzer, or clock.