ABS on a 4wd.. on or off?

[DSMnOOb00]

so i was installing a sub and amp with my stock stereo then somehow i blow a fuse. but then i notice that my ABS fuse is missing, 2 15s and a 30a.... whats the deal, someone took them out, so should i replace them? i mean my braking is fine.... just wanted to ask.

thanks!

 

[luv2rallye]

ABS was an option so not all have it. Ones without are missing those fuses. You have ABS if the 2 brake lines from the master cylinder go to a box with 6 brake lines going into it.