123 Wiring Diagrams

Negative Ground Switched

Negative Ground TUNE USB

Negative Ground Bluetooth TUNE+

Positive Ground (Applies to Switch TUNE and TUNE+ Models.) In case of the TUNE, Yellow wire goes via electric switch to Earth ( +12 Volt)

D-Jetronic Negative Ground Switched

HKZ 3-Pin

Porsche 911 3.0 SC w/6 pin HKZ