(ET) Where to find main switch for an E-15

[Dave Krafft <dkrafft bitstream net>]

Well after plowing for almost 4 years in Minnesota without a problem, I 
finally did a pretty stupid thing and shorted out and fried the main 
switch/ power cutoff on my E-15. As an example, say you were going to 
trailer your E-15 across town at rush hour in a snowstorm in order to plow 
a lake for an icebike race and you have been leaving the electronics door 
off because just every once in a while the main relay sticks in the on 
position and it easier to smack it with the door open. You get out to the 
lake and about 20 min into the plow job all of a sudden you hear a loud 
fsssst! and see a flash and realize that you have fried the main switch. 
Guess it didn't like that salt and snow combo up under the dash. Oh well a 
quick wiring job using a 30amp  breaker as a switch gets it off the lake 
and allows me to turn it on and off but won't handle the loads of the stock 
unit. Anyone know where I can get a replacement now that Bill is no longer 
selling parts?
Thanks,
Dave K.