6d ago

Headlight wiring, 2016 Triumph Speed Triple S

2016 Triumph Speed Triple headlight connector and wiring colors

I'm trying to install zero-rise clip-ons, because I find that more comfortable for riding at speed than sitting upright. But the instrument cluster and headlight assembly interfere with using clip-ons, so I need to replace the headlight assembly, and relocate the instrument cluster.

Photos are uploaded on Imgur, because they were too large for Lemmy.

First part:

I'm trying to figure out what the individual wires are that are going into the terminal for the headlight assembly. There are a total of five wires in a six-pin connector (with the last terminal plugged off): blue with red stripe (UR), solid yellow (Y), solid black (B), blue with white stripe (UW), and blue with yellow stripe (?UY?).

When I look at the wiring diagram in the service manual, black (B), blue/white (UW), and blue/red (UR) go to the headlamps, and black (B) and yellow (Y) go to position lights, and I don't see anything, anywhere on the diagram labeled blue/yellow.

So, first, which wire does what? I assume that two are low beams/DRLs, two are high beams, black is the neutral (?). If I trace the wiring diagram, the blue/red comes from the headlamp dip switch, so I think blue/red is the high beam, and blue/white is the low beam/DRLs? Black seems to go to everything, so I'm assuming that's neutral.

...But what the hell are the position lights, and what it the blue/yellow wire for?

Second part:

Does anyone know exactly what the connector is that I need here? It looks like it's a Sumitomo DL 090 Sealed Series 6195-0024; does that seem correct?

Third part:

If I'm trying to wire in a 7" JW Speaker LED adaptive headlamp. Since that's only one headlamp, but the existing wiring harness wants to have two high beam wires, and two low beam wires, will I want to splice another wire into the high beam and low beam on the before crimping on terminal ends? And what about that pesky position light? Will that be the red wire--front position--for the JW Speaker headlamp?

...And I still have no idea what that blue/yellow wire does.

5 comments

I don't know the pinout of your bike specifically, but it should be dead easy to figure out what wire does what by probing them with your multimeter. The low beam and high beam circuits will have 12 volts on them at predictable times (i.e. when your low or high beams should be on). The position lights are the low constant illumination of your front turn signals when they're inactive. You can determine which wire is ground by checking continuity between it and your bike's frame. It will have continuity to the frame at all times, regardless of the headlight switch or ignition switch positions.
You're probably on the right track with that connector, but if you want to be sure there's a catalog with dimensions in it here. Use your digital calipers to check the critical dimensions listed and that'll tell you for sure.
You can just tie the two high and low beam positive wires together if you don't want the extras flapping around loose. They are connected to the same circuit and doing so is electrically identical to not doing so, except there will be no random live wires floating around that you either need to cap off or worry about touching the frame.
- Okay, so low beam should always be on. High beam should only be on when switched on.
  The position lights
  Can't be that. I've replaced one of the turn indicators; it's only two wires, and neither of them are the same color as the position indicator. In the wiring diagram, the position light is not going to the the turn signal. And, most important, the position light wire is only going to the headlight assembly. I had thought that there was only a single bulb in each side of the headlight, but maybe there's another one...? It's not really something that can be disassembled, aside from changing out the bulb.
  there’s a catalog with dimensions in it
  Good deal; I can check that pretty easily.
  
  Is there no other running light in the stock headlight cluster, then? For instance, my FZ has the "jewel" thing above the headlight which is separate from the headlight/low beam, but it's still always on when the engine is running.
  Regardless of where it goes, the position light is a running light, on when the bike is running. It might also be one of those Euro/US things where some countries got the option and some didn't, but the harness is the same. (E.g., the 1s gen KLR's have the "city lights" connector on the US models for a set of running lights that were not installed on US market bikes.)