Pass Lab Amp questions, back of amps, power cable & 12v trigger.

Greetings.  I have been in radio silence since my amp is still at Krell for service since April.  Thinking of procuring a used Pass Labs amp in the interim.  I see the Pass amps have a removeable power cable and an odd 12v trigger input.  What gage wire do the X250 & X350 amps come with in case I need to get a power cable?  Also the 12v trigger terminals.  Do they use a standard cable with one end stripped and bare wire used?  If so, I reckon a mono cable would be used.  Seems odd to me this setup.  The online manuals do not really say much & do not mention the 12v trigger from what I read.

Thanks for any input.   -John