There was some unexpected wiring in the headlight that wasn't on the most recent service manual I had prior to getting the 13-17 manual, an 08 service manual for steel frame cruisers. There is no truly accurate wiring diagram for the 16/17 bikes. They don't have an LED or HID headlight or ABS; so, none of diagrams are technically accurate (although the LED headlight [w/o ABS] diagram has all the right content). Whatever, right? Use the LED diagram.
Stuff that's clear from the diagram and experience (circled in black):
- H7 connectors for high/low beam on another bike
- an H4 connector for this bike
- The Euro running light connector
Stuff that was unexpected:
- Orange: An uncapped "accessory" connector (on the headlights circuit)...no idea what type of connector this is (edit: this is apparently a Delphi/Aptiv 150 series unsealed connector available on mouser, mfg #12059250)
- Red: Properly capped connector for right handgrip cruise control module (on another bike)
- Purple: open female bullet connectors running ground and 5Vdc (for an ambient air temp sensor on another bike).
Why is an ambient air temp sensor (for fairing bikes with a temp display?) connected to an unsealed, generic connector usually reserved for accessory connections? I don't know; it's bizarre.
Stuff not clearly pictured:
Two square cross-section female .250" spade connectors labeled "hand warmers" that are tied into the secondary lights (turn/horn) circuit. These seem like the logical first choice for powering switched accessories at the front of the bike (without running new wire): The circuit is for non-essential lighting, and, if you swap all your bulbs to LED, won't have much load on it. The actual accessory connector (noted above as circled in orange), however, is on the headlight circuit which is essential.
Other accessory power considerations:
The following connectors are electronically equivalent: H7 low beam, front position light, accessory, HID balast power (which must be under the seat b/c I don't see it in the headlight). They are all two pins tied into the headlight splice. Even though some or all of these are weatherproof connectors, I still think it best to connect switched accessories to the hand warmer connectors (since they are on a non-essential circuit).
The low beam on the H4 connector is not powered directly from the headlight splice; it is the only thing run from pin 2 (called accessory power on the diagram) on the headlight control switch. Now, the headlight switch is powered by the headlight splice, but that means all power for the H4 low beam runs through the headlight switch (and surely means it's off when the high beam is on). Anyway, point being that, if you want to extend switch life, increase power to your low beam, or both, it's probably be good to run the low beam via a relay triggered by the H4 low beam lead (but powered straight from the headlight splice or an add-on circuit).
Anyone know why the diagram shows a separate Accessory fuse? I think this sucker is actually lashed to the frame under the right side cover but external to the main fuse box. This makes no sense to me, and I can't make sense of where this power gets routed.