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2003 toyota 4runner tail light pin out?

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=91963
Printed Date: May 05, 2025 at 10:24 PM


Topic: 2003 toyota 4runner tail light pin out?

Posted By: mklttdv
Subject: 2003 toyota 4runner tail light pin out?
Date Posted: March 21, 2007 at 10:19 PM

I am trying to tap directly into the wire harness that runs into the tail light provide power for my backup camera. It has 5 wire.

So I turned on my car and put it in reverse... and check it with a multimeter... So I figure out that the red wire is the pos for the backup light. Now... the interesting thing is that the rest of the wire seem to be grounded when the other light are off and seem to be switched on depend on what light is on. So now my concern is that which wire is really the ground for the back up light.

I don't know if I am making any sense but it seem like the whole vehicle is grounded together when it's turn off... and depend on whatever got switch on then that wire become "live" but as soon as it's off the wire seem to be grounded. If anybody can shred any light into this I would really appreciate it.

I am not sure what would be the best place for this post... so if it's in the wrong area please let me know and I'll move it.



Replies:

Posted By: mikvot
Date Posted: March 21, 2007 at 10:41 PM

If you got the reverse wire, then all you need to do is send the ground from the camera to a....ground...any ground will do. Just run a wire to the chassis. Or just narrow the wires down....blinker, brake, park lights... find the wire that doesn't change with any of these functions. I would definately use the first option though just to be 100% sure.



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