Yeah, you're right, there is two fuses there. I haven't been in there in so long I thought that larger one was a relay. I always pulled just the small 20A fuse to disable. I guess either one would do it. If the light comes on it's disabled. I can't even remember now which one I cut the wire to for my ABS cut-off switch. I know it was a heavy white wire, so it probably was the larger 40A fuse.
Mark