Bulbs that will work- W5W, 2825, 194, 168, T10 (limited by depth of the housing)
Since these bulbs are only on at night, I wasn’t concerned about them being super bright. I bought some cool white 194 5-SMD (5050) bulbs on Amazon for $5. It came with 4 bulbs. You only need two for this swap, but extras are nice
To get at these you need to remove 4 Philips screws, 2 per side. Then you have to twist and pull the housing out of the rectangular holes they are in, which is a major PITA. I almost gave up because I couldn’t get them out easily! Be patient, you’ll get it. Once the housings are out you can unscrew the bulb socket and remove the old bulbs.
In my case the LED bulbs fit fine into the socket, but were too long to be able to screw the socket back into the housing. I had to remove the LED ‘array’ portion of the bulb from the base in order to modify the base. All you need to do is straighten the wire that is bent over the wedge base, then the LED portion pulls straight out. I then trimmed the top part of the base down with an exacto knife. The LED can then slide back into the base and rebend the wires back into their original position.
Modified bulb on the left, original on the right
It was still a tight fit, but the socket was then able to screw back in. Make sure you test the lights before putting everything back together. If the LEDs don’t light up, just pull out the bulb, flip it 180 degrees, and then plug it back in.
Comparison of LED (left) to original (right)