For all the people that changed their stock headlight bulbs to aftermarket ones that have a higher wattage, did you change the wiring harness or no? Maxima owners say that if you dont change the wiring harness, it will melt the wires.. etc. is this true?
Also, the high-grade wiring harnesses sold online for maximas come with 2 relays, what are these for? Cant someone just make their own wiring harness by making your stock wires thicker?? I'd appreciate some feedback on this. Thanks.

 

Yes, bulbs that burn at higher wattage will eventually burn your harness.. Get upgraded 9004 wire harness from like APC or www.suvlights.com. I have it, my bulbs are 100/80W and no problems after like 3-4 months now...

 

That site doesnt work.

 

Anyone ever made heir own Headlight Wiring Harness using the original bulb socket?

 

cut & paste to your browser . it works

 

Yes you can make the harnesses by yourself, but unless you know what you're doing it will take a while. Basically you will need to upgrade to larger wiring something like 12-14 gauge, then at least two relays, one for high beams one for low beams, I used a dual relay on each side(four relays).I reccomend to use different sockets from the stock ones, incase you need to switch them back one day. You can get new 90004 sockets from pep-boys or auto-zone but forget the model numbers. And you can just tap into the wires from the stock headlights or you can run new wires into the the car. Up to you. It's a pretty simple and inexpensive thing to do if you have some kind of mechanical skills. I remember seeing a detailed diagram and instructions on the board somewhere. Other wise just buy the aftermarket upgraded harnesses they are plug and play very easy to install.

 

I would definetely recommend that you upgrade to aftermarket wiring harnesses. I had 100 watt bulbs in my max and the harnesses started melting after about 2 months. I put piaa s/w's in and have had no further problems but plan to buy the apc harness or upgrade to real HID in the next couple months

 

i got a harness from southwestautoworks, what's the difference betweeen that one and the apc one? the apc one is like twice as much in $, does that equal better? thanks.

 

Thanks a lot chen, really appreciate it. If anyone finds that site or page with detailed instructions, post the link here.

 

two things are importnat here:

1. the aftermarket harness with beefier wires and new relays. i got mine from competition limited 734.464.1458 i think it was $25 and well made. all you do is plug your old headlight harness into the switched leg of the relay and run your new harness direct to the battery. the relays are upgraded and built for 100w.

2. good grounds. the ground complets the circuit. it needs to be good or you'll burn the the new harness or your plugs (then you'll get the super annoying 'dim' headlight).