Why not order a new harness here is manual with parts list you can order harness from powermate directly
There is no wiring diagram in manual
www.powermate.com
Manual
https://www.dropbox.com/s/k4w4e3huikl99pa/manual_pm0675700.pdf?dl=0
if you send pictures of harness i may be able to help also the best way to figure this out is to get socket at other end of harness loose if possible and inspect this end to get wiring pattern for other end of harness...send pics if not sure
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