Yes that could be. I know when I have hooked a trailer up to the GL it will say what certain bulbs are out on the trailer.
Sent from my iPhone > On Aug 13, 2022, at 2:08 PM, Jim Cathey via Mercedes <mercedes@okiebenz.com> > wrote: > > >> >> And there is still power to all terminals at the 7 pin socket (except for >> trailer brake and ground.) > > Power? Or +12V measured with a multi-megohm input impedance meter? > (Zero current, essentially.) Chances are it's got a pullup system, looking > for > the load of bulbs to draw signals to ground so that the car can do lamp-out > checking, and trailer-plugged-in checking, etc. > > -- Jim > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
