Justin Squire,
I started to reply to this several times, and deleted my posts as it seems like there are so many things to cover. I'll try again.
Here are my thoughts, they could be wrong.
The power for the turn signal flasher must be fused and connected to a switched source of power. This means the switched side of the ignition switch. This applies to turn signals only..warning flashers would be connected to a unswitched power supply.
#3 on the wiring list is backwards to my thinking. Charging system output (VR B) and all loads connect to ammeter - while ammeter + is connected to BATT at the starter switch lug.
Your wiring diagram of tail and front turns look good. Are parking lights and taillights the same?
If the large filament of the dual lamp is BRAKE, it is bright when illuminated. This means that in order to properly see a blinking TURN, which is less bright, that it need to be as physically removed from the BRAKE lamp as possible.
Wouldn't this mean that the dual filament bulb would be BRAKE (large filament), TAIL (small filament) and the other single bulb located further up in the light assembly would be TURN.
It appears to me, using the toggle switch for turns, that each lamp at the back will have a single function. TAIL/PARK will come on with the head light switch. BRAKE will come on when the brake pedal is depressed. TURN will come on when the toggle switch is flipped to either side.
All these functions are separate and independent of each other...a tough way to accomplish it in my book!
In your situation, unswitched, fused power is wired to one side of the pedal actuated brake switch. The other side is routed back to both BRAKE lights, which would be the large filament of the dual filament lamps.
I don't know if I left anything out, and hope this helps answer at least one, or some of your questions. This is the way I think it would work.
Stuart
