OK Joe, After looking at the schematic, I can see that the relay has 12V always applied through F12 as John said earlier. The circuit is grounded to the negative battery and to pin 30 on the ABS controller. The hot lead to the lights from the relay looks like Grey with a yellow stripe and it is a +12 off the relay when it is energized. Pin 4 on the ABS controller looks like the signal line to energize the relay all but the center bulb. I have heard the center bulb is special and it looks like it is fed directly from the ABS controller via pin 6 and not though the relay. I have no idea if they are common inside the ABS or not. The wire color is the same for both pin 6 and pin 4. That brings up a question. Are all the brake lights on or just the outside 4 ones and the center is not on during the failure?
If I could find the ABS controller pin 4 and check that during a failure, it would tell me if the issue was inside the ABS electronics. Maybe a sticking relay inside there if there is such a beast on the circuit board. never looked at one.
Here is a question for the group. Do the brake lights come on with the ignition off on the I-ABS? Do the whizzy brakes work with the key off as a safety feature to be able to stop the bike? I know my lights do not come on with my ABS-II system.
So if I'm understanding you correctly it can't be a short in the ground wire going to the lights because they are activated by a +12v line that is sent through the relay. So my thought about a short across a ground wire to the ground wire in the brake light system wouldn't activate the lights?
I'll check on which lights are on this morning. I have some errands to run first.
To answer your last question there is a sticker that came on the bike, affixed to the cover of the compartment on top of the tank, that says something about the brake system is a servo system and only works while the bike is running. It's still on my bike so I'll get the exact wording when I get it later and tell you what it says.
The relay they replaced on the bike was yellow and had 2 pins on it. On the repair order the part is noted as "unrealized 61 36 8 366 282 :Connection plug, golde" I was told they couldn't find that part number as being associated with my bike, but there it was.
I'm going to pull everything off myself today and see if I can trace the wires back to where ever they go. What I can't understand is how, after they do the work, including a test ride, the lights are off when I pick up the bike. Then, sometimes 2 days later, they come back on.
Once again thank you for all your time and assistance,