I was just reading on his site and looks like he only does sync 2 to 3. I am sync one as far as I can tell (the buttons below the display have an O on each one). is this not possible? I see sync 1 to 3 on ebay and on amazon... so not sure if Id be in trouble if I bought one.

Also, if this is possible, to be honest, my main reason for wanting to this is because my right arm is severely handicapped and Id like to upgrade to a automatic climate control. Its really hard for me to drive and change the settings which are constantly changing it would seem. I have to turn the heat or AC way up at first and then I have to adjust and adjust and adjust to get the temp right. Some of the sync one to 3 on ebay specifically state that one cannot upgrade the manual control. I know you lost some functionality but all I care about is the fan and temp. I dont have heated seats or blower in the rear because I am a regular cab.

Am I going to be able to do this?