I wouldn't guess. I re-suggest temporarily wiring a 12v bulb on a pair of 1-to-2 foot long wires, between one hot wire and the ground wire, and take a bumpy ride. The eye reads flickering incandescent light very well, and is a troubleshooting method I've used for years.
Start at the connections ahead of, and then the connections after, the connector in question. Splice the bulb's wires into one hot and the ground, then the other hot and the ground, If the flicker occurs both before and after the connector, it is not the issue; if only after, it is.
If only one hot wire produces the flicker, you've found the intermittent wire; if both hot wires do, then the ground wire is the culprit. Again, by starting at the main connector, you determine which direction to look, i.e, whether on the bike side or the fairing side of that point.