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Step 1: Route the WH-RV12-TUNNEL harness through the snap bushings in

the F-1202F and F-1203A Bulkheads shown in Figure 1.

Step 2: Find the WH-F57 (BRN/YEL) Stall Warn Wire and route it through the

snap bushings in all the F-1215 Seat Ribs on the left side of the aircraft. Strip

the end of the stall warn wire and crimp on a female spade connector as called

out in Figure 2. Secure the spade connector to the t erminal shown in Figure 2

on the F-1270B ASSY on t he left side of the aircraft.

Step 3: Lay the remaining WH-RV12-TUNNEL harness through the wire

notches in all t hree F-1276C System Blocks then route though the forward

snap bushing in the F -1204 Center Section Assembly as shown in Figure 1.

Step 4: Find the WH-Q54 (ORN/BRN) Fuel Level wi re and WH-F55 (WHT)

GPS Data Out wi re then route them up through the upper snap bushing in the

F-1204 Center Section Assembly, then into the F- 1204Y Wire Run Conduit and

out the right end (use the string installed previously). Strip the end of the fuellevel wire and crimp on a ring terminal per the call-out in Figure 1.

Step 5: Find the WH-F50 (BRN/BLU) Spar Pin Wire and route it up through the

F-1204Y Wire Run Conduit and out the left end.

NOTE: An optional ES NOISE FILTER PUMP may be installed at this time

to reduce the possibility of audio noise from the fuel pump entering the

audio system. If installing the ES NOISE FILTER PUMP skip Step 6 andStep 7.

Step 6: Route the remaining WH-RV12-TUNNEL harness through the aft snap

bushing in the back of the F-1204 Center Section Assembly. Find the WH-P34

(RED) Fuel Pump Power Wire and strip the end. Also strip the end of the red

wire coming from the fuel pump if required. Crimp spade connectors onto these

wires and connect them together.

Step 7: Remove the left bolt holding down the fuel pump. Final-Drill 1/4 the

cushioned clamp called out in Figure 1. Sl ip the clamp around the wires and

onto the bolt, slip the ring terminal from the black ground wire coming from the

fuel pump over the bolt, then reinsert the bolt.

FIGURE 1: TUNNEL WIRE

HARNESS INSTALL AND FUEL

PUMP HOOKUP

WH-Q54(ORN/BRN)

ES 36154

F-1204 CENTERSECTION ASSEMBLY

(UPPER SNAP BUSHING)

F-1202B

F-1202F

F-1203A

F-1204Y

WIRE RUN CO

WH-F57(BRN/YEL)

F-1270B ASSY

FIGURE 2: STALL WARN HOOKUP

FUEL PUMP BOLT

FUEL PUMP GROUND RING TERMINAL

MS21919DG10

ES 421-0107

ES 421-0108

WH-P34(RED)

ES 421-0108

WH-F57(BRN/YEL)

F-1270B ASSY

DATE: REVISION:

VAN'S AIRCRAFT, INC.

02/22/10 3 RV-12

F-1230SHOWN FOR

REFERENCEONLY

WH-RV12-TUNNEL

F-1276CSYSTEMS

BLOCK

WH-F55(WHT)