Hi, guys! I own a 1994 EG6 with a D12b1 engine. Recently, I upgraded my 40watt bulbs to 100watts using a harness that connects from the battery to the sockets. The lighting is superb (I can see the road much clearer now) but one big problem I noticed is that when I turn both the a/c and the lights on, the engine vibrates and stalls. My theory is that the resulting wattage is too high that the lights take away too much electricity from the engine. What do you guys think? Thanks