I'm installing a Zumo 550 on a Dragonfly fairing. I want to wire it to come on as an accessory. I'm thinking I should splice them into the speedo input wires as the power source will come on when the speedo comes on. My bike didn't come with a fairing so the instructions I've found so far don't help. I have the wiring diagram. I just need to know which wires to splice the black and red leads to (combined GPS and Stereo and Tach).
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