2001 lincoln ls wiring

wireing backup sensors to backup lights. sensors stay on all the time need helphuggybear

These cars are different from most in that the reverse lights have constant 12v all the time on one wire, and the ground is switched from the REM. I would self tap the ground for the sensors, and use a relay off the negative reverse wire (BLACK/ red or BLACK/ green) to invert it to supply 12volts to the hot wire for the sensors. 85: to (-) reverse wire 86: to constant or ignition 12v 30: to constant or ignition 12v 87: to red wire on reverse sensors Mike