My horn began honking all on its own, my safety, flashers, turning off and on on their own, and my highbeams will not stay on. Other strange things happening. I serviced as best I could the CEM, to no avail. Same issues happening. Any suggestions? 2005 V50

 

First, I'd recommend checking all the wires. Also, such electrical issues can often be caused by a weak battery or a bad alternator.
Maybe, check the grounds and fuses related to the affected circuits. Plus, a faulty relay or switch could be the problem, considering the symptoms you've mentioned.