LED ADR licence plate holder incl. lighting 1.5m + SuperSeals

Vehicle type

Semi-trailer lighting — markers, rears, end-outline.

A semi-trailer takes more lamps than the tractor pulling it: side markers every 3 metres, end-outline markers at the corners, twin rear combinations, licence-plate lamps, and on tank or curtain-side variants additional under-running protective lamps. This page covers the spec, the failure modes, and what to fit on which trailer type.

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Vehicle type

Trailer lighting — small trailers and tow-behinds.

Single-axle and tandem-axle trailers towed by passenger cars or vans run on the simplest electrical systems on the road: 12V, no CAN-bus, and a 7-pin or 13-pin connector to the towing vehicle. The lighting decisions are also the simplest — but get them wrong and the trailer fails its annual inspection.

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