Which Wiring Harness for a Tacoma with JBL? | Tacoma World Dec 01, 2009The JBL harness seems to be different then the non-JBL stereo harness. The only harnesses I see available are the ones that allow you to tie into the existing JBL system (amps and speakers) which I do not need to do. I just want to plug into the truck's stereo harness and get power, ground, illumination, etc. Scosche:JBL Amp Power Wire | Tacoma WorldMar 18, 2019Replacing JBL system. harness issues. | Tacoma WorldOct 24, 2012Factory Sub Wire Harness diagram | Tacoma WorldMay 16, 2012non-JBL to JBL Conversion Harness | Tacoma WorldApr 30, 2012See more results Amazon: toyota jbl harness Touchscreen CAR DVD Bluetooth Stereo Rear View Camera Single Double DIN Dash Kit Harness Combo for 2005-2011 Toyota Tacoma + JBL Amplifier Turn-On Interface $304 $ 304 .