actually it doesn't burn headlight housings...the Super Plasma might, but the GT-X will not, it is a standard 55/60W bulb same as stock. The Super Plasma I think is a 100W which would burn the housing. Get your facts straight please.
I've never ever had a problem with the wiring harness or anything burning. The lightbulbs are the same rating as the stock. 55W/60W bulb. So your harnesses can handle it. The temperature of the bulb is a bit higher, but I have NO melting at all.