Audi A4 / A5
Ident. No.: 1313525D_EN Status: 25.09.2012 © Webasto Thermo & Comfort SE
6
Electrical System
Wiring harness routing
1 Original vehicle line duct
2 Wiring harnesses of heater, metering pump in
corrugated tube
3 Cut open original vehicle protective rubber
plug
Fuse holder, K3 relay
1 Positive wire on positive support point
2 Angle bracket
3 Mount M6x20 bolt, large diameter washer,
flanged nut in existing hole
4 M5x16 bolt, retaining plate for fuse holder, K3
relay, washer, flanged nut on angle bracket
5 Wiring harness of heater and metering pump
Wiring har-
ness rout-
ing
diagram
Wiring harness pass through
1 Control unit pulled out
2 Wiring harness of fan controller, digital timer
3 Earth wire on earth support point
Wiring harness pass through
1 Control unit mounted again
2 Wiring harness of digital timer
3 Wiring harness of fan controller
Do not install the metering pump
wiring harness until later togeth-
er with fuel pipe along the origi-
nal vehicle fuel lines on the
underbody
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