Mark wrote;
>>You are third person I know of who did the same thing when they
>>installed a 1314/5. A friend did it wrong a few weeks ago and asked me
>>for help. Perhaps SurePower should have more prominently emphasized the
>>requirement for the ground wire in all cases.

Mark,
Is there a reason that Sure Power could not make a connection from the ground prong to the metal frame of the relay at the factory?  Is there an application where this ground would not be required?  Even if there was such an applicaton it may be easier to disconnect the ground than to make a ground connection on the majority of installations.  If the relay was mounted to a non- grounded base then a ground wire would need to be installed anyway.
George
'85 Westfalia