The dealer charges cuadruple here, and i have to wait 60 days for the kit.

The cost in the us is $399

I read on another post that the module tells the car that you are towing and changes the settings for traction control or braking.correctly.

All ball sizes and trailer conectrions (4, 7 or 13 pin)are available localy for cheap.

My main concern is for the electrical parts to plug correctly and for the electrical module to work.

Also i see different part numbers from the online dealers for the kit.

71-60-0-035-368 at BMW Accessories - Genuine Accessories for BMW 1 Series E82 88 3 Series E46 3 Series E90-93 5 Series E60 61 6 Series E63 64 7 Series E65 66 X3 X5 X6 Z4 at Dealerfit.com
71 60 0 303 878 at BMW Parts and BMW Accessories | Bavarian Autosport

The more i search, the more im confused.

Sebastian