Quick Wiring Question for Cafe Project

[ams14]

Hi guys, I pulled this motor out of a GS500E about 2 years ago or a café project build.  I'm working on the harness and have a quick question, where does this wire connect to?  I assume Battery to???

[ams14]

Here is a quick pick, will get some better ones up soon.  Frame is 'fairly' custom.  Working on the harness now.

[Falken Hawke]

Battery (-) Negative to Chassis, plug to Regulator.

[ams14]

Thanks, appreciate it!