hoggy,I was out messing around with the wiring on my A.D.,it has a tilt colum in it.The rear signal lights are:left=yellow. right=grn.both energize when the brakes are pushed.I pulled out the flasher,no signal lights at all:no flash,no light,however the brake lights work
So if your signal light comes on when you have no flasher,that may be where your problem is.I'm not sure where it might be,but there are very few wires involved