It sounds to me like the signal and tail filament connections are reversed. One filament in each bulb is brighter than the other and the brighter one should be connected to the signal/brake indicator.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!