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905701 REV B 09/18/18, PG 19 OF 34
Drain Hose Installation
1.
2.
9.
10.
11.
From the passenger compartment, using the firewall opening as a reference, measure down 2 ¾” from the
bottom right corner. Mark and drill a 5/8” hole through the firewall for the drain hose (See Photo 1, below).
Insert the drain hose through the previously drilled 5/8" hole, and attach it to the evaporator drain (See Photo
2, below). NOTE: If the hole is covered by carpet, a 5/8" hole will need to be cut into the carpet as
well.
Route the heater control valve connector through the remaining hole in the fresh air cover (See Photo 10,
below).
Attach the white ground wire from the heater control valve wiring harness to a suitable ground.
Route the remaining main wiring harness wires (white ground, red power and blue safety switch wires)
through the same hole as the heater control valve wiring (See Photo 11, below). NOTE: Disconnect the red
wire from the circuit breaker in order to route the wire through the rubber boot.
Wiring Installation (Cont.)
Photo 1
Photo 2
Photo 10
Photo 11
2 ¾"
Mark and Drill a
5/8” Hole
Firewall
Firewall Opening
Evaporator
Drain
Drain
Hose
Run Drain Hose
Through Firewall,
and Attach to
Evaporator Drain
Passenger Compartment
View
Route Heater Control
Valve Connector
Through Remaining
Hole
Fresh Air
Cover
Route Remaining
Wires Through
Same Hole
Passenger Compartment
View
