Golf IV / Jetta IV :: Trunk Won't Open Electrically With Button On Driver Side

My trunk doesn't seem to open electrically any more - that is, the button on the driver's side nor the button on the key fob will open the trunk. All I hear when I attempt either of these methods is a click near the fuse box. I do not hear the actuator at all. It worked intermittently for a few months, but now it seems to be completely dead. My google searches led me down two paths - either the actuator itself is broken or the wiring going from the latch to the actuator is messed up.

I removed the actuator from the trunk and tested it using a different power supply. It seems to work fine when I apply 12v through the leads. I also connected my multimeter to the connector that plugs into the actuator (the connector is hooked up to the wires coming from the front of the car). When I push the trunk button on my key, it spikes to 11v, then drops back to 0. To me, this indicates that there is no flaw in the wiring.

I even re-soldered the wires where it tends to kink on the drivers side in the trunk (It looks like they have been previously DIYed so I thought something may have come loose there), but that doesn't seem to have worked. As far as I can tell, the wires seem to be working fine by testing through the multimeter, and the actuator seems to be fine by testing from an alternate supply.