Question about LED Lighting

Tools Josep Ma. Rosell

November 28, 2012
Filed under RV Tech Q&A

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I purchased some LED bulbs for my 2005 Newmar Kountry Star motorhome to replace my 1157 bulbs. When I installed them on the side marker/turn, the turn portion worked, but the marker portion did not. In the back in the tail/stop position I could not check the brakelight, but the taillight did not work. Does it have something to do with the fact that the turn light in the rear is separate from the brake/taillight? When you turn on the four-way flasher (with the regular bulbs) both the turn and brakelights flash. Any guess why they will not work?

Howard Hill l Stoughton, Wis.

The side marker/turn bulbs rely on backfeed to work, and LEDs only work with correct polarity, so they’re not going to work in that location. The LED bulbs draw so little current that a regular flasher probably won’t work. Make sure the rear bulbs match the socket terminals. Install them one at a time and see what happens.

– Ken Freund


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