PL720 2WD L4-2488cc 2.5L DSL (SD25) (1985)
Power and Ground Distribution: All Technical Service Bulletins
Wiring Diagram - How To Read Instructions
Models
All Models
Section
General Information
Classification
GI86-008
Bulletin No.
TS86-027
Date
March 13, 1986
HOW TO READ WIRING DIAGRAMS
Effective with the publication of the recently distributed 1986 D21 Truck Service Manual, two changes have been incorporated to assist technicians
when servicing vehicle electronic components. In the future, these changes will be incorporated into all new model Service Manuals.
I.
Because wiring diagrams are now found in more than just the EL Section, the "How to Read Wiring Diagrams" information has been moved to the
GI Section for ease of reference.
II. As shown in the example below, direction marks are now being used in various electrical service procedures. These marks will clarify the connector
side (terminal or harness) being serviced, and are used mainly in illustrations indicating terminal inspection.