I know it's a late reply. I installed switchback style led bulbs into the turn signal of the foglamp assemblies on my 04 GP. I bought the bulbs off ebay along with 3157 wiring harnesses that have the resistors with them. Paid $13 for the pair for the harness. For some reason the bulbs didn't want to stay clicked into the harness sockets, had to grind the the ends of the bulb down and they stayed in. You can remove the headlamps and makes it easier to self tap some screws to keep the resistors away from anything that will melt. Everything works as normal. And fyi, the turn signal/running lamp isnt the ck style
