TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
6. STANDARD WIRING HARNESS WORKING IMPROPERLY - CONTINUED
7. MULTIPLE COMPONENT WIRING HARNESS WORKING IMPROPERLY
This is a common procedure for wiring harnesses with multiple switches and components. The cab lights
wiring harness is shown, the dash panel wiring harness, derrick wiring harness, marker light and stoplight
switch wiring harness, steering column wiring harness, and submersible fuel pump wiring harness can be
done in a similar way.
When doing tests, always note wire number and meter reading for each wire.