SO, I have the amplifier adapter for my RX400h with factory nav/ mark lev. this adapter one has one plug for the main pigtail. when I unplug the middle harness on the radio the touch screen goes black and I can no longer control my climate, info, map etc. I don't care about the sound beeping or the nav telling me where to go.. I would just like to be able to use my controls.
I've seen this done on other posts but no one mentions how they made the factory touch continue to be functional. do I have to remove the part that plugs into that middle harness from the radio and stuff it in the dash somewhere to hide it just so it continues to work? is there a jumper wire that needs to be hooked up?
Please help I have a 900 mile trip coming up and i'd like to be able to play videos for my two kids, to keep me sane!