Technical Fiat Ducato loom connection for steering wheel functions

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Technical Fiat Ducato loom connection for steering wheel functions

Gerry79

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Joined
Sep 30, 2025
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Location
Cumbria
I have just fitted a steering wheel with controls together with the three wire squib as recommended here in several threads.
However when I come to connect the connect2 adapter kit to the Pioneer head unit it appears a previous owner has cut off the one plug from the Fiat loom which is needed for the steering wheel control signals(I believe). Where the plug has been cut off there are 4 wires white/grey or blue, white/green, black/purple and a yellow/red. The connect2 socket only has three connections. There is also an unused cable with tag “system remote control”.Anyone able to help please.
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I attach photos to help explain.
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Model
Hymer Exsis (Fiat ducato 2.3L)
Year
2014
Mileage
27000
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