Join Date: Aug 2007
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As far as I know getting the dash display to work with an aftermarket head unit is pretty much a non-starter. The steering wheel controls can well be made to work with suitable adapter leads as you suggest - but from others experiences not as well as with the OEM head unit.
The Vauxhall Cavalier - one of the safest cars you'll bump into
Currently in Bob925's garage:
2015 '65 Vauxhall Astra SRi, and a variety of "lovely" buses