The listed max weight is 750kg (1650lbs) on a trailer without brakes. With working trailer brakes the listed weight is 1500kg (3300lbs). Haven't seen any trailer wring kits for MB in this country. Except for "M-class"
WE always solder the wiring connection at the plug for the tail lights & use an adaptor for imported cars that allows correct operation of turn signals & brake lamps.

Remember the load on the auto transmission, you may need an external trans cooler.

Don't think you want tongue weight above 250lbs.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator