Can anyone tell me what the brown wire in the wiring harness is for? I'm trying to install my Creeping Death Tiger turret and their photo is too small to accurately gauge where the wire connects on the board. It appears that the recoil unit positive wire connects at the point the brown wire is connected to, but it would seem to make more sense to connect next to that where the power feeds from the switch. Their instructions do caution that it should not be connected directly to the battery...

Here's their photo. What do you think?