Blown fuses for these accessories most likely. if not you have an electrical gremlin good luck.
you will have to take your dash apart from were the gauges are all the way to the radio
If a 1987 Chevy Suburban has lights and horn, but no ignition, gauges, radio, or interior lights it could be a ground wire problem. It is possible that there is a short somewhere. Also check the dome light for a possible water leak in the headliner.
Blown fuse
Possible sign of a bad alternator not producing adequate voltage. Have your local auto parts store check it out. Most likely has to be replaced.
Looking at the front of the factory radio you will notice two slits in both lower corners. You are supposed to purchase a radio removal kit from Mercedes. But I found that you can use two metal nail files or feeler gauges. Slip the files or gauges into the slits, this releases the side clasps. Leaving the files or gauges in place you should now be able to pull the radio head unit straight out towards you. Do it slowly to make sure you do not break the wires connected to the rear of the radio. Now you can disconnect the wiring harness behind the radio.
It sounds like a wiring issue. There could be a loose wire on the instrument cluster, on behind the fuse block.
radio, heat, air conditioner
How can the use of waveguides running from the antenna down the radio tower to the radio equipment be avoided? give two solutions to this problem
It's that part in front of the driver with the lights and gauges, radio, glove compartment, etc.
Check the wiring at the battery, and the starter. Many vehicles have a second wire that powers the vehicle from the starter wire. It sounds like a break in this second wiring system.
It is mounted in the very front part of the center console just below the gauges.
check the radio fuse (rdo) under the hood, it should be 15 amps