Forum Discussion
Cheryl_B
May 27, 2017Explorer
travelnutz wrote:
Your RV of that age should have 1156 incandescent bulbs in the interior lights which is a single filament high current draw and the bulb really gets hot when on. The center of the bulb base should have a single fairly smooth bump lead contact and it's the positive current contact. The metal barrel shape of the bulb base that has the little pins sticking out the sides to keep the bulb in when turned in the socket is the negative current side contact. Do not use a bulb in your socket that has 2 bottom lead contacts (1157 bulb) as it has 2 filaments and is for tail lights. One for running lights and one for stop and turn signal lights.
Thank you for explaining all that. I am not at the point of checking how wires are connected but this paragraph I saved of your post was very helpful. I bought the wrong bulbs for the cabin! They have the two bumps on the base instead of the one. Now I have to go retrieve them all and put them away for their correct purposes.
I'm sure that is why it happened in the first place. :)
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