magredvet - Thank you for your input. I would appreciate the Mercedes part number for the alarm, if it's convenient for you to find. Did you have to change any of the wiring? If it's a straight swap, with the existing wiring, it sounds perfect for me. I've heard rumors, and that's what they were, that you need a different wiring harness to install the Mercedes alarm.

I looked under the hood the other day and couldn't even see the alarm. On the firewall there is a opening with something red behind the opening, and as best as I can tell, it has the VIN on it.

I've built several street rods in my life, and a couple of race cars as well. The electronics on those vehicles were very simple. This is a new adventure for me. I'm 79 and I refuse to give up! Especially since I keep telling myself that I'm 39 and I can do anything. Well, almost anything.

Thanks again,

Jim