So you guys ran 80/100W bulbs without melting the harness? I read on the Hella website that relays would improve performance by reducing voltage drops.
Yes, I ran and still run 80/100W in my Talons (all 3) and not my truck.
Yes, Hella is right, you will increase performance if you use relays. It is not the relays that improve the performance, it is the ability to use a larger guage wire which has less voltage loss.
Doing the Rewire or relay mod requires you to run new wire. For the work I am not sure if it is worth it. I never noticed the wires heating up all that much anyways. If you want some hints or help with the mods, drop me a PM and I can give you some tips.