Opt you should try unplugging the brake fluid level sensor? It disables the Traction Control/stabiltrac but retain ABS function. If so inclined all you would need cut one wire and add a switch to it. No need for a relay
Good to know, I believe you but that's so counter intuitive... Also ABS is another thing that can hinder off roading
EDIT: I wrote this on my phones browser so I came out pretty bad, lets try again...
This is good to know and I believe you, I think it is really odd that it works this way (counter intuitive) because I would think that the ABS would care more about having fluid than the traction control but w/e... You'll go insane trying to figure out why these engineers and "programmers" do things the way they do.
For me at least ABS is another thing that can get in the way while going slowly down a steep hill with one or two wheels off the ground at any given time. When I'm doing things that the engineers don't consider when designing these systems I prefer to remove them and make the decisions on my own. I work with computers all day, I'll probably never trust them... ever.