Re: '97 Seca II, resurrected from the dead, Speedo wiring. Stumped!

[webman94]

Hello everyone! I finally got around to doing a build thread on my resurrection project, check it out in the Projects folder. I am using a Dime City Cycles mini Speedometer on mine, and it works really well. However, I'm just now finally getting to wiring up the idiot lights, etc., and I've run into a problem. All of the lights work correctly, except for the turn signal indicator. It works properly when the right turn signals are activated, and the indicator shuts off when I turn off the signals. However, the indicator does not light or flash when I turn the left turn signals on. Below is the wiring "diagram" for the speedo, if you can call it that:

Dime City Speedometer Wiring Diagram by ericd_weber, on Flickr

Here is the diagram from my Haynes manual:

Yamaha 97 Seca II Wiring Diagram by ericd_weber, on Flickr

Here's how I have wired the speedo; the first wire color listed below is the wire from the speedo:

Oil Light: Red/black to Red/black on bike
Red to Brown on bike

Neutral: Green to Brown on bike
Green/black to Lt. Blue on bike

High Beam: Blue to Yellow on bike
Blue/black to Black on bike

Speedo Backlight:
Orange to Blue on bike
Black to Black on bike

Turn Signal Indicator:
Yellow to Dark Green on bike
Yellow/Black to Dark Brown on bike

Here a couple of photos that show most of the conditions I mention above:
IMG_1459 by ericd_weber, on Flickr

IMG_1463 by ericd_weber, on Flickr

Any thoughts on what I need to do differently to make the left turn signal work? I thought I had it right, but clearly I don't. Note that the left side was working fine prior to swapping out the speedo, and I haven't done anything else with the wiring. No blown fuses that I could see, either. Everything else works exactly as expected. I'm stumped, so any help would be greatly appreciated!