FIGURE 1: REPOSITIONING
THE TUNNEL AND OPTIONAL
HARNESSES
Step 1: Pull excess wire from the the WH-RV12-TUNNEL and WH-RV12-OPTIONAL harnesses down
through the F-1202B Panel Base until the backshells of these harnesses are in the approximate location
shown in Figure 1.
Route the WH-RV12-TUNNEL and WH-RV12-OPTIONAL wiring harnesses through the slots for snap
bushings in the F-00027-L Com Support as shown in Figure 1.
Step 2: Slit a snap bushing saved from the F-1202K-L & -R Inst Stack Supports previously in this section
then install it around all wires and the Aft Pitot Tube going through the F-00027-L Com Support except the
WH-RV12-OPTIONAL harness. Insert the bushing into the lower snap bushing slot in the com support. See
Figure 1.
Step 3: Tie-Wrap the WH-RV12-TUNNEL harness to the Aft Pitot Line where the wires exit the backshell on
the harness.
Tie-Wrap the WH-RV12-OPTIONAL harness to the WH-RV12-TUNNEL harness where the wires exit the
backshell on both harnesses.
Step 4: Loosen the F-12125 Over Rudder Wireway.
See Page 31-13 Figure 1.
NOTE: When making loops in wires do not loop wires around other wires! This may induce errant
electrical signals into data or audio wires.
Step 5: Pull the excess wires from the WH-RV12-TUNNEL and WH-RV12-OPTIONAL wiring harnesses into
the tunnel area.
Loop then tie-wrap the excess wires back on themselves as shown in Figure 2. Use a generous radius six
times the diameter of each bundle.
FIGURE 2: RESTRAINING EXCESS
WIRE LENGTH
TIE-WRAP,
2 PL
WH-RV12-TUNNEL
(BOTTOM)
WH-RV12-OPTIONAL
(TOP)
AFT PITOT LINE
SB750-10
F-00027-L
F-00027-R
TIE-WRAP
EXAMPLE HARNESS PATH
WIRE LOOP
PAGE
REVISION:
DATE:
VAN'S AIRCRAFT, INC.
10/03/11
PAGE
42D-18 RV-12
REVISION:
0
DATE:
