Upgrade or replace the radio in your compatible Toyota vehicle with this interface that retains the use of the vehicle's JBL and JBL Synthesis amplified audio system.
Sound came thru system ok but volume was stuck at a low setting and the volume knob on this adapter did nothing. Was trying to use with a 2002 Lexus ES 300 Mark Levinson system. Tried another identical adapter in case the first was defective but had the same problem. Ended up having to replace the entire Mark Levinson system. Also there are no speed sense wire, backup wire, or illumination wire connections on this adapter.