I noticed a few weeks ago that my front fender tip light was out. Bought a replacement and now find that it is dim.....As in the filament is barely generating any light. Looks like low voltage.

Sooo. I take out my handy voltage meter, promptly touch the leads incorrectly and hear a fuse pop. Sure enough, None of the "running" lights work. Soooo, I replace the fuse and put everything back together and we're back where we started. Any ideas?

 

Bad ground

 

BAD GROUND First, then a loose ,dirty,frayed socket on the lamp side of circuit.

 

OK Thanks. I guess that makes sense.

 

My '05 EGC had the same problem. I found that the clearance between the tire & fender is very small, approx. 3/16". My tip light wire had come loose from the cheesy factory stick-on retainer clip and had chaffed through, I had to replace the wire. The new wire doesn't come with the batwing-end connector so if you replace the wire you'll have to reuse that connector. I used construction adhesive to glue the wire in place in the fender and haven't had a problem since.
Gregm

 

It sounds like you may have some corrosion in your socket. I noticed the first time I got caught in the rain that the front (and rear) fender tip lights were practically filled with water. I removed the lenses and bulbs and put some dielectric grease in each socket to try and head off any corrosion issues down the road.

 

Clean up all the contacts, check the grounds, and then replace the bulb with an LED array from one of the many sources out there.