Repeaters on running on 12v buss from the solar panels.

I have two MTR2000's UHF repeaters located at a 9000 foot mountain top. The site is solar power only. With the wx in Southern California we have had two total power failures at the site. The power comes back up slowly and the repeaters do not come out of the diagnostic startup modes. I have to go to ...

I take it plain old carrier detect isn't good enough? Normally you get 'fast carrier detect' on pin...B4...I believe (no manual here at home). It goes from ground to +5volts when carrier is present. What I'm not sure of is whether or not you get the carrier detect there without the proper PL, if ...

Does anyone know how to map PL detect on the MTR 2000 to the 96 pin connector on the back of the repeater