Sorry for resurecting a very old post, but figured it'd be best to include all the previous chatter.

After much deliberation and inspection and hunting, I cannot find any bad grounds in my turn signal electrical wiring whatsoever.

I had a thought the other night. Since my front turn signals work perfectly, Could I just piggyback the current from the front turn signals and run it to the corresponding rear signal? If I just slightly increase the fuse to handle the additional load, maybe it would be bright enough to work? It already seems to have enough grounds on the entire circuit to handle a speaker capacitor. Why not a couple additional bulbs?

I know it sounds hokey and I am a strong proponent of "Do it right the first time", but I really have no other options going for me.