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Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
TR3driver
Great Pumpkin - R.I.P
Offline
Sounds like you are on the right track. Likely my next step would be to connect a test light from power (W1) to the disconnected yellow/green; and then start checking voltage along that circuit.
With the lockout & operating switches closed, the test light should be on brightly and nearly 0 volts from the yellow/green to ground. From your description, I would guess that you'll find closer to 6 volts. A bad lockout switch would be my top candidate, but it could also be something else, so do the test. On my Stag, I eventually discovered that a quick connect was not making consistent contact even though it snapped into place. There was just a tiny bit of play once it snapped in, which was enough to make operation intermittent.
If you get down to where there is ground on one side of the lockout and not-ground on the other side; remove the switch and check again. It might just be that the switch was not properly installed and is being held partially open. They are supposed to have washers added, to get them the right distance from the shift forks inside the housing.
One other thing, the factory OD wiring on TS39781LO did not match the diagram Geo gave. Instead, the operating switch was on the hot side of the relay, which winds up being simpler (one less wire running from the relay to the dash). My point is just to not assume that your wiring matches the diagram.
With the lockout & operating switches closed, the test light should be on brightly and nearly 0 volts from the yellow/green to ground. From your description, I would guess that you'll find closer to 6 volts. A bad lockout switch would be my top candidate, but it could also be something else, so do the test. On my Stag, I eventually discovered that a quick connect was not making consistent contact even though it snapped into place. There was just a tiny bit of play once it snapped in, which was enough to make operation intermittent.
If you get down to where there is ground on one side of the lockout and not-ground on the other side; remove the switch and check again. It might just be that the switch was not properly installed and is being held partially open. They are supposed to have washers added, to get them the right distance from the shift forks inside the housing.
One other thing, the factory OD wiring on TS39781LO did not match the diagram Geo gave. Instead, the operating switch was on the hot side of the relay, which winds up being simpler (one less wire running from the relay to the dash). My point is just to not assume that your wiring matches the diagram.
