Se pueden usar los pines : 3, 4 ,6 ,8,12,14 Mobile Radio Accessory Connector Predetermined Functionality Pin Description Direction Comments 1 Speaker (-) Not Programmable 2 External Mic Audio Partially Programmable 3 Digital In #1 Input Only Fully Programmable, 12 Active Low Only 4 Digital In #2 Output Only Fully Programmable 5 Flat TX Audio Input Partially Programmable 6 Digital In/Out #3 Input Only Fully Programmable 7 Ground Not Programmable 8 Digital In/Out #4 Selectable Input/Output Fullt Programmable 9 Analog In #5 Special Input Fully Programmable, Tri-state Emergency Switch 10 Ignition Sense Special Input Not Programmable, Active High 11 Flat RX Audio Partially Programmable 12 Digital In/Out #7 Selectable Input/Output Fully Programmable 13 Switched Battery (+) Not Programmable 14 Digital In/Out #8 Selectable Input/Output Fully Programmable 15 RSSI (Radio Signal Strength Input) Not Programmable 16 Speaker (+) Not Programmable 17 BUS (+)* Not Programmable 18 Boot Control* Not Programmable 19 Unknown Not Programmable 20 Unknown Not Programmable *These pins are used in conjunction with the flash adapter cable. If you want an easy way to connect to the Accessory Connector on these radios, you can order the HLN9242A or HLN9457A Accessory Connector kits. These include an accessory connector housing, some pins, and some wires with pins already attached. One thing to note, the HLN9242A kit also includes a pin extractor for removing previously installed pins. This kit is designed for the Maxtrac/Radius series of radios, and as a result, is only a 16 pin connector (not the 20 pin like these radios use).