wire to go to the terminal board and you find the other symbol
for an electrical connection. The three lines join at a solid
circle, the other symbol for an electrical connection.
Remember, when electrical lines cross and they do not
intersect at a clear or solid circle, no electrical connection
The same holds true for the negative connections. Look at the
negative connections for 2BT104 through 2BT106; the lines go
to a clear circle. Follow the three negative lines off these
connections to where they join into one wire to go to the
terminal board, and you find the other symbol for an
electrical connection. These three lines also join at a solid
Terminal Board Enclosure.
Looking at the diagram, you find
the positive wires off the batteries go to 2TB152 and the
negative wires go to 2TB151. What other information can you
obtain from this enclosure? If you examine further, you find
the lugged ends of wire harness 2W154/5 attach to the terminal
boards, using connections E9, E10, E7, and E8.
Wire Harness 2W154/5. This wire harness connects the terminal
schematic, you should have no difficulty determining the
Type of cable.
The solid oval around the wires to pin
connectors B and D, and A and C indicates the wire has a
non-shielded outer coating.
If the wire harness has a
broken oval around it, that broken oval indicates that the
wire harness has a shielded outer coating.
Gender of pin connectors and number of connectors the wire
Examine the end of the wire harness just
before it connects to the power distribution box.
diagram clearly indicates that the pin connectors are
It also shows the pin designations in the
connector (e.g., A, B, etc.).
Also, the diagram shows
this wire harness has two connectors identified as P1 and
all the components that mount inside the power distribution
box, thus providing you with information about the components
and circuits inside the power distribution box.