1157 LED Replacement Bulbs
I purchased 4 Pilot Automotive LED 1157 replacement bulbs (IL-1157W-15} to install on my 2000 model motor home. The tail light cluster is a Bargman very similar to what is in use on older Lance truck...
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I'm running this version, which has been working fine. It must have some circuitry inside to prevent the backfeed problems.
http://www.ledtrailerlights.com/stt_1157.htm
http://www.ledtrailerlights.com/stt_1157.htm
