I am in the process of wiring a set of new Daytime running lights to my Mercedes. However, I am wiring them for 2 purposes.
Firstly to switch on when my interior lights switch on ( Wired to the Interior lights circuit) when I unlock the car, and secondly, to switch on when the car sidelights are switched on ( sidelight circuit).
I've wired up all the relevant wires and thought everything was sweet untill I tested it out.
When the interior lights illuminate the relay buzzes quite loudly for a second. Same happens when they fade off. My guess is that the relay is making the noise because it's not getting enough voltage during the on and off sequences.
All wire connections/ground cable are good
Does anybody know how I might be able to stop the buzzing??