94 Accord ABS, compressor, & engine temp problems

This is a multiple request for help, please.
94 Honda Accord LX, 2.2L 4-cyl, 248K

ABS dash light comes on, after about 30 secs or so of a buzzing noise when I start my car. Then I hear a click, the light comes on, and never goes out until I shut off the car.

AC stopped working. Replaced bad condensor fan - no luck. Seems like the compressor won't engage.

Engine temp dash gauge shoots full hot as soon as I start my car, but all engine temps tests are ok. Changed thermostat, radiator fan switch, coolant temp gauge sending unit, engine temp sending unit. Nothing worked.

AC/Heater & ashtray dash lights don't come on anymore.

This all seems like electrical problems to me, like possibly a short. This is something I can't fix on my own. I know it's a lot to ask, but any advice would be helpful.

TIA