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Discussion Starter · #1 ·
I have an 04 Cavy that I just purchased my 2nd aftermarket headunit for. My only problem is that I have to use a GM Class 2 interface to get my headunit to work. Im familiar with this problem but when I had my last headunit installed, the installer bypassed the security and didnt use an interface. My question is
1. Does anyone know how to bypass the security WITHOUT using the interface?
2. If so, how do u do it?

I also noticed the installer had spliced a fused wire into my main harness running through the firewall, Its spliced into a solid blue wire but I can't figure out how to connect it so the interface is not needed.
Any info would be heplful.
 
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