I think the other realy is return to neutral for the PTO. I know I've lost contactors due to shorts. I've made the mistake of trying to remove the charger without disconnecting the battery cable going to the rear pack. I lost a contactor on that one that otherwise appeared fine.
From: "Michael S Briggs" <msbriggs unh edu>
To: jlantonucci comcast net
Cc: elec-trak cosmos phy tufts edu
Sent: Wednesday, May 21, 2014 2:35:53 PM
Subject: Re: (ET) tractor no worky
On Wed, 21 May 2014, jlantonucci comcast net wrote:
> Mike - check you battery voltage. Highly discharged batteries can cause
> those symptoms. Then check your relays.
> Some people use Curtis controllers (or others) but the Alltrax is the only
> one specifically designed for our tractors.
>
> Jeff
Jeff - it's a little over 38 V. The forward/reverse relay is a fresh one I
just put in to replace the one that may have been blown - but I still get
the same symptoms. Hm, I can't remember what that other leaf relay is
for....
Thanks,
Mike