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Installation Instructions:
Electrical System for Towing Hitch
Important note
Before starting work read the installation instructions.
Only qualified specialists are allowed to install the electrical installation kit.
Follow guidance in the current repair manual when carrying out installation work on the vehicle.
Caution - disconnect battery
Damage to the vehicle electronics may result in loss of stored electronic data.
Before starting work read out error memory.
Note
When fitting, pay particular attention to the following points:
Wiring must not be pinched or damaged.
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All seals must be properly seated.
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The seal for the socket must be positioned on the insulating sleeve and not on the
•
individual wires.
Route wiring so that it does not chafe against the vehicle or break off.
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Do not route wiring immediately next to the exhaust system.
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When fitting the control unit make sure that moisture cannot penetrate. The cable
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connection should always point downwards.
The additional warning lamp for checking the turn signal indicator on the trailer is already factory-
fitted and accordingly pre-assembled.
For trailer operation the rear fog light of the towing vehicle is disabled.
A rear fog light must be retrofitted on trailers not already equipped with one.
A socket adapter may only be used in trailer operation. Remove the socket adapter when trailer
operation is not in use.
Check the operation of the trailer using a trailer or test equipment with load resistances.
Subject to technical changes!
10
305 213 391 101 - 007 - 07/09
Installation Instructions:
Electrical System for Towing Hitch
Audi A4/B8, A5
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