We keep blowing fuses in the blower circuit for air conditioner. Initially had a loose wire below the circuit board. That was fixed but still blowing 20 amp fuse. Checked amps in that circuit and only drawing 8 amps but fuse will blow after 1 to 5 hours work. Wondering if a dirty connection in the loom somewhere. I have no access to a wiring diagram so any suggestions on where to look would be appreciated. Blower and air conditioner seem to be working OK when fuse is intact. Wondering if I need to bypass the plug in circuit board for that circuit. Reason is fuse is not held tight in clips as heat has affected the metal tabs. Wondering if that may be a cause. If any one has a wiring diagram so I can trace the wiring in the loom that would be helpful.