In order to make them come on with the car I would get a relay activated with the cigarette outlet. Basically wire your fog lights directly to the battery. Then cut the positive write to them and add a relay where your 85 pin comes from the power to the outlet and your 86 pin grounds to the frame. Your 30 pin should come directly from the battery and your 87 pin should go to the fog lights.

this will make the fog lights turn on anytime the keys is in the acc position.. It when the radio is on. I'm sure there are wires you can use for your 85 pin from the tod or the air conditioner than will turn them on only when the car is running but splicing wires in those systems is asking for problems