When I did the complete exterior/interior LED swap, I put resistor loads in EVERY single exterior light (front, back, center). However, every time I hit my brakes, the center dashpod would dim. If I turned on my lights, it would get brighter. Mitsu's and LED swaps are a pain in the ass. Nothing ever burned out, just little annoyances. My guess is that there is nothing you can really do without chasing down every wire.