HI All. I'm in the midst of changing my Exterior bulbs out with LED Bulbs. After I had done the first turn signal bulb, I got the hyper flash. If I remember correctly from one of my past Volvo's, the flasher unit was built in to the Hazard Switch. Is this also the case with my C30? Either way, has anyone figured out a way to do the turn signal bulbs without getting the hyper flash?

 

You can try and wire in resistors, "hyper flash eliminators", etc. Some bulbs are easiest left OE on Volvos.