So I am hoping to put a newly sourced AGG and loom into my VW campervan. I know I need the immobiliser unit / key / aerial and ECU to match but when I met the seller he said it had an after market immobiliser that was installed by a previous owner.
I have no idea why the previous owner did this, I am hoping the original one which is still installed is also working and that I can remove the aftermarket one.
I had a quick look and it only seems to be spliced into the ignition barrel part of the loom:
Is anyone familiar with this immobiliser? Does it work independently of the OEM?