I can't remember which ones you need to tap into, what I did was purchase the Metra 70-8114 Steering Wheel Control Wire Harness with RCA. You shouldn't need the Axxess module but, for me it made it easier to connect the steering wheel controls. There should be three wires coming from the harness two are for the wheel controls and one ground if I remember they are grouped together and the ground should be easy to spot so it just leaves the two SW wires. You may have to swap the two SW control wires if they don't work the first time. Also, the harness has the RCA connectors that will restore your AUX port.

 

Hi,
I know the wire harness stuffs. Basically the head unit I got is included. there are total 3 wires. 1 for ground and 2 for signal from switch but i am unable to connect them.

 

TIS will give you the wiring diagrams - I'd tell you if I knew, but I tend to go to these when in doubt. You can gather an entire FSM at the same site, so if you do pony up the $20 for the 48 hour access I would gather everything they have there. https://techinfo.toyota.com/techInf...064744&authn_try_count=0&locale=en_US&resource_url=https://techinfo.toyota.com/

 

The power of reading a (Toyota) electrical diagram is underrated.

 

So not sure I'm following you, the harness I mentioned is a harness for the steering wheel controls from the stereo to the Toyota harness. It's different than the stereo harness however maybe this will help you look at Wire Harness side E92 diagram.

https://www.toyotanation.com/forum/...79436-diy-steering-wheel-control-add-ce-le-2010-corolla-updated-8-3-2011-a.html

 

Very helpful for me. thanks again. However, I decided to get a multimeter to check the continuity of wire from the steering wheel because when I removed the switch component. I connected to my head unit and it worked perfectly. Now just trace for those wire from the connector behind the steering wheel's air bag. Anyway, I should finish it and post to the forum how I did it.

 

Hi - I'm stuck with the same challenge. I've found some other info online but the color of the wiring is throwing me. I expected black for the ground, not pink striped. My wiring on a 2011 camry for my teen is exactly as you have pictured. Do you remember if it was like this pink/gray = ground, brown/gray = steering control 1 and then yellow/gray = steering control 2?