Wiring Diagrams - Towing Centres UK Ltd Wiring Diagrams An important aspect of towbar fitting is the wiring which is required to power either your trailer lights or caravan internal electrics. This is often overlooked when booking a towbar or can be difficult to understand exactly what your vehicle requires if you have none or very little knowledge. Narva | Trailer Plug Wiring Guide 7 pin EBS trailer wiring diagram . Since January 1st 2015 all new trailers (exceptions apply) need to comply to ADR38/04 that specifies they have either Anti-Lock Brakes (ABS) or an Electronic Brake System (EBS) to automatically adjust the brakes. HOME | 7 Core Electrical 7 Core Electrical is an industry-leading electrical wholesaler. We pride ourselves on providing our customers with a first-class service, utilising our 6 branches that Related searches for 7 core wire diagram 4 wire trailer wiring diagraminner core diagram