(ET) Elec-Trak controls for 2005?

[bill-wallace att net]

It seems there are a few folks of the same mind here or at least a few 
that don't have mutually exclusive ideas.  Maybe we can make some progress 
on this during the non-mowing season.

I have an E-12 that works well enough to mow with for now and an E-20 that 
I'd like to restore which has a few issues with the control circuits.

My plan for the winter was to get after the tear it apart, clean, repair, 
paint work and then start on re-wiring it.  That lead to thoughts of 
replacing and or improving the control circuits, maybe using relays with 
36v coils, etc. to avoid running a tapped battery pack.

Over the past few months I've seen e-mail to this list with part numbers 
for the connectors, the 36v bulbs, 36v relays, etc. we'd need.  The idea 
of a new control board that can be plugged into existing wiring sounds 
really great to me and it seems a few others.

I'd like to suggest that we see if we can work out the details, share 
ideas, etc..  Is there enough interest that we should use this mailing 
list?  If not, could those who would care to join in let me know and I'll 
get a mailing list set up for this.

My first question would be who, if anyone, has access to the most recent 
version of the wiring diagrams, the service bulletins, etc.?  I know about 
the ones on the elec-trak.org site but for this to work we have to cover 
as many variations as practical.  The second would be does anyone know how 
many versions there were and how much they vary?  From what I understand 
we MAY be able to make a board that works for E-15s and E-20s if it is 
done in such a way that field weakening is optional.

Thanks,
Bill