You bet - sounds like it's being a real PITA.
I've worked many different types of electrical and electronics over the years. Automotive electrical is unique in and of itself and the way the circuits are overlayed upon one another makes for some real strange interactions at times. Aircraft, home electronics and residential/commercial/industrial wiring are more or less straight forward systems with many common techniques shared - automotive wiring is not and can be a real bitch to work.
Sometimes a problem in another circuit will manifest symptoms elsewhere. I've discovered this with blown fuses before - I don't remember the exact symptoms from that adventure - but, it took a while to find it.
Seems like it had something to do with the dome light.
Lots of car circuits, the dome light for one I can think of, carry power to the device and then open the ground side of the circuit to switch it on and off. It follows in a sense, digital electronics where a signal will be a transition from a logic high to a logic low. Most electrical circuits switch the "hot" and not the ground or neutral side. Out of simplicity and efficiency auto wiring will take a single hot wire to the dome light, then run the ground side from the light to each door and the dome light manual switch - all the switches are connected to a ground source on one side. Assed backwards - but, in this case it's probably the best way do to it as it's the most economical solution. They can grab a ground near any switch - otherwise there would need to be a hot wire ran to each switch in addition to the run from the run from the switch to the device.
Letting a mechanic look at it is probably a good idea. It could be something that might cause you problems down the road and it best to get it corrected.
Many times troubleshooting isn't about finding the problem, but methodically eliminating potential causes wire by wire and part by part and that can take a while and also be expensive.
The ground from the battery to the engine is an important one. Then also the grounding from engine to chassis.
Good luck with it.