Here is some info on the DBC2. This looks like a DBC2 from Phil
Get the DBC2 hooked up to your tank and working before you mess around with the asiatam recoil The Speaker wire from the DBC2 needs to be hooked into the RX18 as demonstrated below.
Here is the link to the instruction manual. This will help you understand the DBC2 and how you hook it up to your receiver.
http://darkith.dyndns.org/~darkith/f...RC2HL_inst.pdf
As I mentioned get this all working, before you tackle the Aisatam unit. I remember having to just about rewire the whole asiatam unit to get it to work..