(ET) Tractor back up, now to figure out the high speeds....

[CZ <cz alembic crystel com>]

Putting in the new old style relay from Jim's store fixed the problem. 
Now the accessory works right every time and follows the proper rules. 
The new/rebuilt open frame relays look exactly like perfect looking 
versions of what is in the tractor, happy I am.

Now for the fun part: My card 4 is a wreck, I know this and I know that 
the tractor won't do speeds 6,7,8 because the FW relay is always in when 
running. Probably a shorted transistor. But speed 5 isn't working and I 
am not quite sure why.

Speeds 1-4 are fine, as is cruise control. However when I went to speed 
5 I got nothing along with 6,7,8. Odd since speed 5 is independent of 
tractor fw shutdown. I know the micro switch is working because I can 
shut down cruise control by going to 5 on the pedal. So that works.

What could it be? It's possible that R4 is shorted or something, or that 
it is always in circuit and my field is running low all the time (that 
could explain a bit about the speed variations). But then why would CC 
shut down when I went past speed 4 into 5 if the switch was not working?

Weird.

C