This.rescue52 said:It can easily be obtained off the shelf from a store like radio shack RadioShack 12-Position Male Polarized Connector : Connectors | RadioShack.com
Here is a link to the installation manual and it is called the Power Harness (12 Conductor) 175684-06 (See last page)
or eBay Federal Signal SS2000 Siren Controller Wire Plug Control Harness Cable Hookup | eBay
nycmedic said:The cabke that connecta the brain to the controller is that a telephone cabke?
MtnMan said:Yes, but it needs all 4 conductors. Most off-the-shelf phone cords only have two.