I have a question

Electricity is like water, it will take the shortest path to ground. If in the same circuit you have bulbs with different wattage ratings it could add to the brightness. Have you ever noticed when a turn signal bulb opens (technical term for burns out or goes bad)? The signal will blink faster because the same voltage is being applied to less resistance. I would try putting the same bulls in all four sockets. If the problem persist check and if necessary clean all the connections. A little corrosion can cause havoc.

Good Luck

Just a guess, but the LEDs draw much less current than the old incandescent bulbs. There may be some leakage past the switch which wouldn't show up with the old bulbs but is enough to light the LEDs a little. You could try connecting the lights with the LEDs to a different 12v source to see if it works ok. If it does, maybe the switch is dirty???

Addendum - be aware that LEDs are polarity sensitive. The +12v has to be wired to the correct contact. The Incandescent bulbs couldn't care less.

This kind of head-scratching electrical stuff is often caused by a bad ground somewhere. Check all grounds before replacing anything.

drsteve wrote:
This kind of head-scratching electrical stuff is often caused by a bad ground somewhere. Check all grounds before replacing anything.

I have two new light fixtures and I plan on swapping the two out tomorrow.....I hope this solves the problem.....I wonder if it is in the master switch which is located in a switch cabinet....

Bob Vaughn wrote:

drsteve wrote:
This kind of head-scratching electrical stuff is often caused by a bad ground somewhere. Check all grounds before replacing anything.

I have two new light fixtures and I plan on swapping the two out tomorrow.....I hope this solves the problem.....I wonder if it is in the master switch which is located in a switch cabinet....

I found the problem...I had installed a voltage display and had paired it with the light switch for these two lamps, when I disconnected the ground of the meter the lights worked correctly . Now I have to find a different way to connect my meter....There is no rhyme or reason as to the color of the wires connecting the 3 switches in this panel....

Good luck thanks for the update.