yes... I piggy back the POS+ from the tail light on the backup light on the
harness, the NEG- on a metal screw on the body cavity behind the tail
light. I put on driver's side but plan to put on passenger's side too. The
very good thing is not only i can see in the dark when I back up the van,
it's also good during day light - people SEE me backing up and stop...

yup, a few close calls before having the lights, none after I have them...

dan