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Mercedes-Benz 420SEL Questions

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My alarm randomly goes off at any time. Mostly during the night.
What seems to make the problem better or worse? Nothing, just decides to go off by itself
How long have you had this problem? Probably 6 months
How do you open the hood on a 1986 Mercedes 420 sel
Start ok but then black smoke, no acceleration stalling
I have a 91 Mercedes 420 sel, am having issues with vehicle randomly surging while driving, almost like you lift off accelerator, if you push gas pedal, the fuel consumption gauge moves like you are flooring the gas, but the car doesn't respond, is ...
My battery keeps running down due to constant static coming from radio car doesn't need to be started nor does key need to be in the ignition and radio is able to be turned on is this normal? ????
The problem just started but I notice for a few years when I first accelerate, it would race while shifting, but I thought that was only normal. How can you help by offering a diagnosis.
I have replaced the climate control switches, a/c compressor, mono valve, thermostat, I need help and or cost for repairs
I know that the ezl module controls the advanceing and retarding of the ignition not able to adjust the timing
which rims are better alloy or chrome plated?
My light switch seems compromised. When I turn the switch the running lights do not work. My Brake lights work, the front right headlight works and my blinkers work as well. The front two lights only work when I switch on my brights. Is this a ground issue in the switch or just somewhere else in the vehicle? Also, none of my dash or gear selector lights work but the door lights work as well as the overhead cabin light. My fuses are all in check so I have no idea outside of my current knowledge. The vehicle as of now only has 152000 miles. Any insight would be greatly appreciated! Thank you for reading!
dashboard gauges not working
The economy needle has gone from black all the way to red.
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