Installation instructions:
Electrical system for towing hitch
Socket Pin Assignment
Pin
Circuit
1
Indicator lamp, left-hand side
2
Rear fog lamp
3
Ground (circuit 1-8)
4
Indicator lamp, right-hand side
5
Tail light, right-hand side
6
Stop lamp
7
Tail light, left-hand side
8
Back-up light
9
Constant plus
10
Charging line
11
Ground (circuit 10)
12
--
13
Ground (circuit 9-12)
Fiat Stilo
Wire Colour
black/white
white
brown
black/green
gray/red
black/red
gray/black
green
red
yellow
brown/white
--
brown
306 231 391 101 01/03
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