SameerP

Second, is there any aftermarket wiring harnesses, or is there a way to upgrade the wiring to handle extra wattage, like 100w?

Cheers,
Sameer

roguenode

I put Philips Rallye bulbs in my lows/fogs a week ago. They are 80w. No problems so far. Some around here have had them in longer. I haven't heard any problems yet, but they are definitely a risk.

The increased output definitely helps. They are brighter than stock. White, not blue-ish.

98A4Qtip

What I would say to do - Is make your own harness - Using a real ground and +12V from the battery (fused of course). Wire this with at least 12ga wire. Use the stock headlight wiring as the trip (switch) for the relay, and the ground for the relay.
I would attach new wires to the H7 bulb of at least 12ga (this is easily accomplished with crimp on sliding terminals). Heatshrink Everything, then cover with 3M super 33+ electrical tape.

That will cover the wiring / power delivery needs of the bulb.

I can e-mail you a simple wiring diagram to follow if you need to. This can be made, so it is entirely reversible. (you may have to drill a small hole on the back of the access panel to allow the wires to enter) and then seal with silicone.....

Now does anyone know if the factory housing can effectively dissipate the heat produced by a 70 or 100w bulb. That is the other concern you have to face....

Overall between the lack of voltage drop, and the higher wattage bulb, the difference in light output is amazing.

Take care,
George

SameerP

so that got me thinking. I assume they are fine for the fogs or people here would complain about em. I got em originally back when i thought i was buying some Xenons but that didn't work out and they have been sitting on the shelf for a year, and i thought id open to see what they are.

Cheers,
Sameer

CMC

You could probably wire it up yourself using a relay and power the bulbs directly from the battery.

towrig

I did a search recently on this topic. The relay is necessary to avoid damaging the switch. There were reports of the projector housings melting with 100w bulbs. No reports of problems with the 70W. The two piece reflector housings seemed to have less problems with melting. I have the two piece and may try it with 100w halogens. If I melt the housing then I'll get the E codes I've been thinking of.