Lexus/toyota Harness

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81724
Printed Date: May 15, 2025 at 2:48 PM

Topic: Lexus/toyota Harness

Posted By: Ishinc
Subject: Lexus/toyota Harness
Date Posted: August 17, 2006 at 3:45 PM

hey all!

I am working on a 1999 Lexus GS300 with the standard radio.

My goal is to swap in a 2001 GS300 radio with the 1999, because the 2001 has RDS. Also the LCD on my 99 radio is dead.

The 99 uses the 2 plug toyota type harness. The plugs are the same but the wires are switched around (probably because it uses a external amp). Not a problem since I have the 99 wiring diagram. My problem is that the 2001 radio uses the new 20 pin toyota plug.

I figured that I can splice 2 harnesses together to make an adapter, to go from the 2 plug harness to the 1 plug 20 pin harness.

My problem is that I cannot find a MALE 20 pin Lexus/Toyota harness. I also can't find the 2001 GS300 wiring diagram. The one we have here are exactly the same for the 99 and 01.

Can anyone give me some insight on where to find the harness?

Has anyone had any experience with this?

THANKS!!!

Replies:

Posted By: austincustoms
Date Posted: August 18, 2006 at 12:39 PM

Is this the one? Check the metra site, partsexpress.com was rather limited.

https://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=265-647

Posted By: Ishinc
Date Posted: August 18, 2006 at 1:41 PM

Thanks austin,

That one is close, its the 20 pin plug that I need. I actually found it on ebay and bought it!

Now i'm looking for a wiring diagram for a 2001+ GS300. Anybody have one of those? I don't think the one founded on here is correct because its exactly the same as the 1999.

Posted By: cntrylvr79
Date Posted: August 19, 2006 at 12:27 AM

Here's what I'm getting for an 01 gs300

Battery	BLUE / YELLOW	(+)	RADIO HARNESS
Accesory	GRAY	(+)	RADIO HARNESS
Ground	WHITE/ BLACK	(-)	RADIO HARNESS
Illumination	GREEN / WHITE	(+)	RADIO HARNESS
Power Antenna	RED / BLACK	(+)	RADIO HARNESS
Amp Turn On	BLACK/ ORANGE	(+)	RADIO HARNESS
LF Speaker (+)	BLACK
LF Speaker (-)	WHITE
RF Speaker (+)	PINK
RF Speaker (-)	ORANGE
LR Speaker (+)	RED
LR Speaker (-)	GREEN
RR Speaker (+)	LIGHT GREEN
RR Speaker (-)	VIOLET

-------------
Cause I'm So white and nerdy...
First Class Certi-fried installer

Posted By: victimizer8
Date Posted: November 04, 2006 at 2:08 AM

Hello,

I have a 2003 Lexus GS300.

I plan to install an aftermarket Eclipse double dine Nav unit.

I do not plan to cut ANY OEM wires. I wan to use an aftermarket harness.

Any in particular someone would recommend? Please help!!!

Thank you