+ There is a 4-wire connector on the front of the controller...
You were led to believe that this vehicle had no controller. Is it
possible that maybe you're only seeing the shell of the
controller... and that the actual guts of it have been
removed? Alternatively, maybe they removed the entire unit and
replaced it with a demo/model piece just for display purposes? Just a
thought.
+ On the back of the controller there is another large-size quick
+ disconnect which is not connected to anything - would this have been
+ the battery connection?
The cabling that runs to the battery pack connects to the controller
via one of those large, circular pin-and-sleeve connectors. I can't
recall offhand what side of the controller it plugs into. If we were
dissecting one of the S-10E vehicles, I could be of more help, but
that's beside the point. ;)
+ The manuals I mentioned last time do exist but I have not seen them
+ yet. I am going to try and get a hold of them soon.
I doubt these manuals you speak of are anything revolutionary. The
factory service manuals are available for *at least* the GM S-10E,
which has the same guts as the EV-1. I can only assume that the very
same manuals are available for the EV-1, though that may not be the
case since the vehicles were never sold to individuals. Nevertheless,
at least the S-10E manuals are available. I've seen them with my own
eyes and used them several times. That will give you all the tech info
you need/want on those systems. Taking those manuals to a scanner will
be a big task! The '97 and '98 S-10E manuals come as two ENORMOUS
three-ring folders. Look for at least two, large, maroon, three-ring
binders with very small "label cards" on the spines of the folders. If
they look like the S-10E manuals (which they should), this is how you
can identify them. Book 1 of 2 will have primarily mechanical service
manual stuff and a general electrical troubleshooting section. Book 2
is the Holy Grail of GM EV diagnosis. It has the electrical details
(schematics, tables, etc) on all the logic circuits, power circuits,
diagnostic codes (DTCs), etc. If something goes wrong - which always
happens with an OEM EV - this is probably the book you'll turn to
first. Anyway, selling copies of the manuals - if that was the
intent - wouldn't even be worth the effort of scanning that many
pages! Buying them from Helm would be much less painful.
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