K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
1.
Disconnect the negative battery cable.
2.
Remove instrument panel glove box compartment.
3.
Using a 1/8 inch drill bit and service high blower relay 14036273 as a guide, drill two 1/4 inch deep holes into the blower motor case between the
blower motor and the resistor block. See Figures 2A and 2B tor approximate relay location (S/T shown, C/K typical). Tape should be used to mark
off 1/4 inch on the drill bit to avoid drilling to deeply and damaging any internal blower motor components.
4.
Cut a piece of red 14 gauge wire approximately 20" long. Strip each end of the wire and crimp a female "quick connect straight" terminal on one
end and a "ring tongue" terminal on the other end.
5.
Cut one piece of black 14 gauge wire approximately 5" long and attach connectors to the wire in the same fashion as given in step 4.
6.
Disconnect the orange electrical lead from the resistor block. Cut the orange lead to the blower motor where it enters the female "quick connect
straight" terminal that was just removed from the resistor block. Strip the end and attach a new female quick "connect straight" terminal to it and
connect to terminal B of the new high blower relay connector.
7.
Cut one piece of brown 14 gauge electrical wire to approximately 4" long. Strip both ends of the wire and crimp a female "quick connect straight"
terminal to each end.
