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The common wiring where the 1157 bulbs are used are the 4 wire setup. white for Ground wire, Brown wire for tail lights, yellow is left signal and green is right signal. The brake lights work through the signal light wiring.

On newer model vehicles where the turn signals are separate lights is where you run into the 5 wire setup. Here you have a separate brake light wire.

On the Goldwing the wiring harness you get will come with a 5 wire setup, because the Wing uses separate signal lights. You will need to purchase a 5 to 4 wire adapter to be able to use the 1157 bulbs as tail/signal/brake.

hope this explains what you need to know to get it all working.
 

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Wiring

I think you have it planned out correct.
 
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