new to the site sorry i know u guys have seen this post a thousand times but i still havnt found a straight answer anywhere . so my factory headunit is shot.. so i buy a new headunit only to find out there is not such thing as a wiring harness for a gs300. i was told its basically a total rewire job and i have to buy all new speakers amp and sub for everything to work due to the fact that i will bypass the factory amp and sub. local audio store suggests. so what ALL to i need to make this work and the process thanks for the help

 

U can use a harness from an 87-up Toyota but you have to remove the wires and re-arrange them a bit.

Some people even used another set of these harness to by-pass the amp and feed the speakers. This is with the Pioneer setup, don't know if others are different.

 

thanks for the tip. thats a start. so as far as the stock amp and sub .. they are useless sounds like i have to upgrade that as well. thanks bro

 

there should be a jumper harness for it

 

https://www.clublexus.com/forums/lex...ration-gs.html

 

infamous that was exactly what i was looking for! thanks guys!

 

is the head unit bad, or the computer in the trunk that runs all that crap up front? i had water spill in the trunk (didnt know for a few days) an everything started dying. found the prob, unplugged the battery, dried i all the electrical plugs back there, and back to norm.

 

fastryan. actually the guy i bought it from had it rigged to hell and back. he had a 6 disk changer in the trunk, which was not hooked up had no purpose there. the glove box was missing the 6 disk stock changer out of it. it was a mess so i have no working cd player. so i figure ill just buy an aftermarket head unit. so thats when the can of worms opened with all the wiring and all this fun stuff i have to figure out how to make right.