Installation instructions:
Electrical system for towing hitch
Cable harness overview
Fig. 2: Cable harness
Item Name
A1
13-pin contact insert
A2
Trailer control module
A3
M8 ground connection
A4
Left tail light adaptor connection gr/bk
A5
Right tail light adaptor
connection
A6
Constant plus extension kit
A7
Fuse holder
A8
Constant plus / parking
distance control connection
A9
Left tail light adaptor
A10 Left tail light adaptor
A11 Right tail light adaptor
A12 Right tail light adaptor
A13 Rear fog lamp left connection
A14 Rear fog lamp right connection
A15 Rear fog lamp relay
Fiat Stilo
Wire
bn
1.5 mm²,
2.5 mm²
gr/rd
rd, ye,
2.5 mm²
bn/wh
rd, rd/bk 1.5 mm²
rd,
2.5 mm²
0.35 mm²
bn/wh
bl/gr
0.75 mm² Cable harness to the luggage trunk
bl/rd
0.75 mm² Cable harness to the luggage trunk
gr/rd
306 231 391 101 01/03
Connecting point on vehicle
Socket holder plate
Below left tail light
Below left tail light
Left tail light
Right tail light
Below left tail light
Below left tail light
Below right tail light
Stilo, 3-door model
Stilo, 5-door model
Stilo, 5-door model
Stilo, 3-door model
lid
lid
Right adaptor
21