Yo! I made a video of the turn signal wiring on my Express. Mine is a 78, but wired like a 1980 with 4 signals. The first post of mine in that thread has a color coded wiring diagram that may also help you. Are you using a 4 amp hour battery? Be sure to check that. The turn signals on my bike DO blink when it is idling, and the whole system is 6V. A weak battery could cause them to stay on solid, and might make your tail light not come on 'bright' when you brake as well. Also, I had a problem just this week with the signals on the left side not blinking. It turned out that one of the little plug-in connections near the tail was loose. Plugged 'er in all the way, and BAM. Blinking again. Good luck to you! Here's a LINK to the wiring video.