Installation instructions:
Electrical system for towing hitch
Installing the electrical kit
1. Disconnect the negative battery terminal.
2. If necessary, remove the following coverings and panels:
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In the luggage trunk
Covering of luggage trunk bottom
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Loading edge covering
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Covering of the right side of the luggage trunk
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•
On the left-hand side of the vehicle
Entrance panel at door on driver's side
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Covering on the left of the steering column
-
•
Depending on the configuration, several coverings inside the vehicle have to be removed
to uncover the cable path from the trailer control unit in the right-hand area at the rear of
the vehicle to the heel plate (between the B- and C-pillar, cross sides in this area) and
from there to the front up to the fuse carrier.
•
Only when the original fuse positions are used: In the engine compartment
Covering of central electrical system
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Air filter housing
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Remove the battery, the battery holder and the air filter
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3. Remove the vehicle's 40 mm hole cover in the side plate on the right-hand side at the rear of
the vehicle (Fig. 1/7).
4. Fasten the trailer connection unit (Fig. 1/6) to the supplied holding plate (Fig. 1/8) using the
supplied M6 screws.
5. Fasten this unit in its intended place in the rear area of the vehicle on the right side using the
supplied snap nuts and fastening screws (Fig. 1/8).
6. Lay the cable end with the 16-pin plug of the socket cable set from the outside through the
cable leadthrough to the inside and to the trailer connection unit (Fig. 1/6).
7. Insert the rubber grommet into the cable leadthrough (Fig. 1/7).
Installing the socket
8. 7-pin: Connect the contact insert in accordance with the socket pin assignment plan.
9. Press the contact insert into the socket housing, push on the 3-pin microswitch housing and
push the rubber grommet towards the socket.
10. Screw the socket onto the holding plate (Fig. 1/5) using the supplied screws and fasten the
cable set along the towing hitch.
Connecting the trailer connection unit
11. Insert the 16-fold connector housing into the intended port of the trailer connection unit (Fig.
1/6) and let it lock into place.
12. Insert the 12-fold connector housing of the 8-core cable set into the intended port of the trailer
connection unit (Fig. 1/6) and let it lock into place.
VW Caddy III, Caddy Maxi
321 556 391 101 - 009 - 04/08
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