When I bought my ST185... It also had an immobiliser installed, I don't remember how I found out what brand they were, but I ended up going to the manufacturer to get a manual for the immobiliser and for them to install my turbo timer. The guy who was working on my car was happy to find out what the override code was. I know I probably still have it somewhere, but I have to find out where I put it! With the override code, I could disarm the immobiliser without the remote, by using the number of horn beeps as a four-digit override code.