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I had the same problem a few days ago whereby I had a dashboard display stating 'Trailer Light Bulb Failure'. I thought it may be the wiring but too much of a coincidence really so considered it to be just damp in the towing plug as it has been constantly cold and wet recently. Inside the plug are several bullet contacts with a cross cut so just prized the contact slots open very slightly with a thin bladed screwdriver and then sprayed the inside of the towing plug with WD40. I shook out any excess fluid, connected up the towing plug and socket and Bingo! problem permanently sorted. I towed the caravan home a further 90 miles without any further lighting issues so it was obviously either damp, dirt or poor contacts that were the root cause of the problem. However, it always pays to try the most obvious first before tampering with wires and cables because quite often some problems can be an easy fix. It just takes a bit of logical thinking.
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Topic: Road light problems
via mobile 23/5/2021 at 7:21am
