Sorry if this is a repost, but I did a search and came up with nothing. I just want a DIY on how to take an aftermarket wire harness from an auto parts store and replace the stock one so I don't have to worry about frying my low beams using aftermarket bulbs with higher wattage. Pictures would help as well. Thanks in advance.

 

^^ bump.

I'm interested as well.

 

i upgraded my wiring harness on my celica awhile back. all it is just cut and paste. well.. more like cut and tape/splice. the harness comes with two wires; a positive and a negative. you unplug your low beam bulb, cut the two wires.. reconnect them with the aftermarket wire and .. youre done! :D

sorry for the no pictures. its pretty simple

unless you're talking about something else :/

 

I second that, but I've always been more of a soldering type of person than twist and tape or solderless connectors. I would solder and heat shrink it.

 

ehhh..... i don't feel that solution... you are still drawing power from the previous wire from wherever you cut/spliced it at. God knows how long that wire goes up to

 

What kind of bulbs are you putting in that you need better harnesses?

 

i think its from a 55w to a 80w or wutevers.. the nokya bulbs and lumitic bulbs draw more power

oh and that is the only way of installing the new harness. either soilder or cut and tape/shrink wrap.

 

My high beams are 100W, but thats because they are never used for an extended period of time. If I kill the harness, i'll replace it then. My low beams are 55W 9006. I've had this for a while and no problems even when I use my brights sometimes...just for your info

 

i thought you could just get the harness from luminics or something and plug it in and go

 

that would be nice...i'll bump that in hopes that its true.....

 

heres a little research that i've done...I found a couple

9005 harness (plug and play): http://store.racinglab.com/kyoplheduwih1.html

9006: http://store.racinglab.com/kyoplheduwih2.html


I don't know that website...maybe somebody has a website of a place they trust...

 

^ those have nothing to do w/ anything. a real harness upgrade requires a relay. if your not putting in a relay, your not doing jack. all you realy need is some wire, some t-taps, a relay, and some butt connectors and an extra 9006 sockets if you dont want to cut ANY of the factory wires. which i highly reccomend. it is easy and safe and reliable to use t-taps and butt connectors to do this mod. should cost you less than $7 if you make it yourself.

feed the realy w/ +12V from the battery, ground it, use a "signal" wire to feed the relay from the stock +12V swittched wire(headlight) and then use the output of the relay to power the 2 new 9006 sockets you just bought. boom.. if you have everything in front of you, should take less than 30min to do. just need to know how to wire up a realy and have some basic wirng tools

 

so what you are saying, harness used in low bean xenon would work?

 

Another question.. how come I hear everyone burns there sockets when it comes to using luminics 55w low beams, but when using sylvania silverstars 55w low beams no one has there sockets burned?

 

it's the connection.. not the wattage.

i'm using conductive gresae on my luminics right now... no problems thus far.
(using stock harness)

 

Thats what I mean if both bulbs are 55w but different brands than how come one burns the socket but the other doesnt.

 

i think squall posted that answer on onther place but

basically bad connection causes heat

i am assuming that the connection in the 9006 bulb was badly designed (assumption since i did not purchase lumins.. i got silver stars)

squall used conductive grease to prevent this problem. rite rite?

 

doing an full harness upgrade will yeild brighter.. my old roomate did it w/ his saturn, and i did it w/ my GA.. noticable differnent... but that is me..

 

.... wiring harness shouldn't really do anything.. it's still power that comes from the battery.

a new one might be able to handle more wattage.. that's about it.

 

^ in theory yes. but if you have larger wires, then more current can pass thus =ing brighter output. the power would come right from the battery instead of going through the switch, computer, long ___ wiring harness, ect ect... dont for one minute think that your getting every watt out of a stock bulb w/ your stock harness.... when i posted that above, i was using STOCK bulbs... the stock wiring was limiting the current flow.. soon as i bypassed all stock, and did a relay.. boom, id say 20% brighter w/ the larger/shorter/ relayed upgrade...