The upgraded headlight 9004 wiring harness assembly....

Okay, these places I checked so far online:

Autosyndicate.com: $45 + Shipping

Aftermarketsource.com: $48 + Shipping

Jegs.com: $52.99 + Shipping

Carparts.com: $55.49 + Shipping (stock # 509104)

Anybody know of any others that is cheaper than autosyndicate?? Much appreciated......

 

Speaking of 9004 Headlamp Upgrade Harnesses, what is the difference between the APC 9004 (Toyota Only) Harness and the APC 9004 (regular?) harness? I don't see how there can be a difference, unless the bulb sockets are different. Can anyone answer that question? Please reply if u do, thanks again guys!

 

Go to www.suvlights.com I got mine from this site. It only cost $35 shipped. It's installed and was easy and works great. I got the regular 9004 harness, not the toyota only. Better to not take a risk on it not fitting...

 

What exactly does this headlight harness or whatever do???

 

It allows you to run higher wattage bulbs without running the risk of frying your sockets......which eventually will happen. I was a non-believer until it happened to me.