If you contact Towsure they can supply you with a correct wiring diagram,or have you tried googling it?
buy a 7 way bypass relay and then wire it in to the rear lights.you then connect towbar wiring to the 7 way bypass relay.simple
If you are Uk based and wiring a 13 pin plug make sure it is wired correctly as it's part of the MOT test and must work correctly.7 pin not currently part of the MOT
towbar wireing dirgram?
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