Owner`s manual

OPERATION — PAGE 28
WILLIS POWER SYSTEMS
FUSE BOX OVERVIEW
Your APU system has two main fuse boxes. The Engine Harness (EH)
Fuse Box, and the A/C or A/C & Heat (AC/HT) fuse box depending
on your system. The fuse box has two rows.
• The right side row is labeled from R1 to R5.
• The left row is labeled from F1 to F10.
Your relays are large square blocks with metal prongs. The only way
to check a relay is by replacing and testing it with a new, working
relay. A fuse requires a visual check shown on the previous page.
Inside the fuse box cover is a sticker that lists the proper fuse size,
the component the fuse is protecting, and the installation location.
To Change a Fuse
Simply pull the fuse out of the fuse box slot, and insert the prongs of
the new fuse into the correct slot, pressing it securely into place.
AC/HT Fuse Box & Cover
The AC/HT Fuse Box has ve relays and three fuses that protect your
air conditioning system.
Image 1 - AC/HT Fuse Box Image 2 - AC/HT Fuse Box Cover
Relay
Fuse