34) Adding a rear view camera...(The LS uses a module to operate all the rear lights. It sends a ground signal to a light bulb to activate tail lamp, brake lamp, reverse lamp.) The camera operates with a (+) signal to turn on the camera. The camera power has to come from the battery saver circuit. The most convenient source is at the right rear trunk lamp (+) circuit. This is always on when the car ignition is on and activates when the key FOB is activated or the door is opened. A separate relay has to be installed to provide the head unit with a (+) signal instead of a (-) signal during reverse lamp activation. A wire from the (-) module side of the reverse lamp has to be run from the trunk lid wiring under the rear seat to the center console. A relay then has to be installed using a (+) circuit at on of the connectors under the console. Use the (-) signal from the module to trigger the relay coil to provide a (+) signal to the radio head unit.
Pin 85 (-) signal from reverse lamps
Pin 86 (+) positive signal from battery saver circuit at connecter under console.
Pin 30 (+) from battery saver circuit.
Pin 87 (+) signal to radio head unit reverse signal.
Pin 87a not used.
Do not use the amp power wire to turn on the camera. All cameras have a heating element to keep the lense from fogging. Too much current for the amp turn on circuit. This will overload the circuit and cause intermittent failure.