Originally Posted by amcordo
This won't solve your bulb out indicator, but I do have a solution to the flickering in your license plate lamps:
These lamps flicker and die for two reasons: 1. Many of the LEDs that fit this position are not sealed and the connections on the inside rust and short. 2. The Crossfire was never meant to use LED lighting; the wiring produces overvoltages that while safe for standard lamps are disasterous for small LEDs.
Here are the workarounds:
1. Get this type of LED instead what you have installed now: search eBay for "6418 White LED" and look for one of the models that is in an all metal housing with two white LEDs. You'll need to place a piece of clear packaging tape across the two LEDs to seal the only holes on the unit.
2. Buy this voltage regulator and install it in between the lamp and the battery (or if you're using load resistors, in between those and the lamp):
RG-12 Voltage Regulators - Powering LEDs with a battery or generator
Later, after the post you quoted, I got some different wattage load resistors that DID make the lamp out indicator go out and removed the flickering. I will have to see what wattage they are before I misquote myself.
Also, the LED lights are working fine and have not gone out due to condensation as the lenses are in fact weather sealed.