Puzzler for you electrical gurus....

[deserteagle56]

A year ago I bought a 12v LED light strip (18" long) and mounted in the van I use an another RV. I like it so much I bought a couple more of them to use to mount in my Bigfoot pictured below. These light strips are specifically designed to use as under-counter lighting in RVs. This morning I tried to mount one of the light strips in the Bigfoot but I cannot get it to come on and cannot figure out why. I removed the OEM light fixture (designed to use a #1141 12v bulb) to access the wiring and spliced into it. Nothing. My test light tells me there is power and the OEM fixture works fine. If I connect the light strip directly to a 12v battery just by touching the wires to the battery posts it works fine. So what is different with the power going to the original light fixture?? What do I have to do to make this thing work?

Thanks in advance!

[ScottG]

I suspect the 12V wires are reversed at the old fixture. Just reverse your connections and see if it works.

[d3500ram]

Rather than use a test light at the source, use a volt meter (digital if you have one) and take an actual reading. If the source is less than 12 volts then perhaps it is enough to power the test light but maybe not enough to run the LED??? I dunno if this makes sense, but I am trying to ascertain a possible answer from the facts you provide.

[Trackrig]

Try reversing your connections. Standard RV / automotive bulbs don't care which way the electrical current flows into them. LEDs have to + to + and - to - for them to work.

Bill