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Hi Andy, I already have a lead connected to the dot4 reservoir, so I'm assuming uts just a standard loom and a spare wire/connector

Hi Andy, I can see the pic, will have a look this aft..

Hi Andy, A picture would be of great help, cheers

Hi, no mine is the dark grey I believe 04 was the crossover year between mk4 and 5 from the saloon to back to hatchback.

Hi Andy, Thanks for the welcome. Mine is an Astra H (Mk5) Elite 1.6 petrol

Hi all, Apologies if in wrong section (Say hi to the noobie) But I've been doing some work on my Astra H (Elite) and came across the wire/connector shown in the pics. Does anyone know where what it's meant to be plugged into? everything seems to work OK apart from the heating (suspected thermostat) Can anyone help please? thanks in advance.