Ok,Now that I figured out how all the connections are made to the relay (it is a different style than the original one, so the connections are not the same as in the manual - that's what was screwing me up, since the way it's supposed to connect in the manual (as far as which poles connect when) isn't the same as this relay is supposed to work). At any rate, I've now verified that the relay is in fact blown - one of the contacts that moves when the relay is activated is welded together, so effectively the field current is able to bypass the field coil when in forward. Ok, so hopefully those relays I ordered last week will be here soon. :)
Thanks for the help everyone, Mike -- -------------------------------------------------------------- Michael S. Briggs UNH Physics Department (603) 862-2828 --------------------------------------------------------------- On Tue, 1 Aug 2006, Michael S Briggs wrote:
Duh, just answered my own question - the extra two connections on the
bottom must be for the power to control the relay. :)
Ok, so that answers that. But, the wires aren't connected to the
relay in the way the schematic shows (i.e. ignoring the bottom ones that
are for powering the relay, the middle (of the three in the manual) on the
right is supposed to have wire 10 connected - but my wire 10 is connected
to the bottom one on the right (not counting the real bottom ones, which
power the relay). So, either something is wired wrong (but it *was*
working, so I'll assume that's not the case), or this is a non-original
style of relay that has the connections different from in the service
manual. If that's the case, I need to figure out where the wires are
connected to this one, and how it's *supposed* to work.
Mike