can someone help me locate what the 50 amp fuse for (hydraulic unit traction) near the battery controls....or is for...what does it control...?

keeps blowing up and driving me crazy...

i suspect it keeps blowing out because there is a ground somewhere in the system....
does anyone have a wiring diagram for this fuse section...?

KEY..when this fuse pops , no electrical power and no crank no start , completely dead...
but as soon as i put a new 50 amp fuse , its ok until i start the car and 40 seconds later it heats up and pops......

i was driving down the street when this happened.....

help.....