Submitted by Mel Charlton on 10-15-2011
I have a 2011-GL-550. I'm also a Diabled Vietnam Marine Corps veteran and I have a power lift mounted on the triler hitch for my mobility scooter to ride. It has a seperate power cord for the lift but I plug a seperate cord into the outlet by the triler hitch that runs to the lift to operate the license plate light on the hitch at night when I turn on the lights. This is the way it's hooked up on all cars or suv's trucks etc. but the problem is "It won't work on my GL-550 - no power. I hhad a 2010 GL-450 last year and had the same thing!!!!!!!! The local Mercedes dealership can't fix it either. The technitions there say the computer recognise s that the lift only has one light and it expecs 2 lights on a triler so that's why the computer keeps it from working.
Has anbody got an answer?