Power Harness
Required. Powers CellSet MC/3 and the Combo Device
KT-PWGL18-95201: Gold Wing GL1800 (USA) direct plug-in - $20.00
KT-PWHD-95295: Harley (connects to back of Harley cigarette socket) - $25.00
KT-PWUNIV-95299: Kennedy Technology Group power harness, Universal  - $20.00

Intercom Harness
Required. Connects the CellSet MC/3 to the motorcycle's intercom system. Harley-Davidson note: The CellSet MC/3 can be connected to Harley Ultra Classics through 1997 using the KT-I2FPD harness - but there is no way to connect this product to later Ultras. . Kennedy makes a specific interface for newer Ultras available here.
KT-I2FPD-95261: 5-pin DIN (H/D Ultra '97 & earlier, Venture, Voyager, etc.) - $45.00
KT-I2GL15-95260: GL1500 - $35.00
KT-I2GL18-95258: GL1800 or Valk Interstate - $35.00

FM Modulator
Optional. NOT REQUIRED for GL1800 Gold Wing, Royal Star Venture, or any other bike with an auxiliary music input (e.g. MP3 player input). This piece may be used on a Suzuki Voyager, and 1997 and earlier H/D Ultra Classics. If you select this modulator, you will need to select the KT-AARCA Auxiliary harness. Includes a Relay Harness so that the FM Modulator will turn on/off with the same switch used for the Base Module.
No FM Modulator
KT-FMMOD: FM Modulator with Relay Kit - $84.95

Auxiliary harness
Required. Connects the CellSet MC/3 to the motorcycle's Auxiliary Input
KT-AA35F-95389: 3.5mm Stereo Female (e.g. amplified speakers) - $30.00
KT-AA35R-95348: 3.5mm Stereo Right-Angle Plug (e.g. Harley-Davidson factory stereo) - $30.00
KT-AA35S-95347: 3.5mm Stereo Straight Plug (e.g. Honda Valkyrie Interstate) - $30.00
KT-AAGL18-95340: Honda GL1800 Gold Wing - $20.00
KT-AAJMCB-95463: J&M CB-2003 - $30.00
KT-AARCA-95442: RCA Plugs (e.g. FM Modulator) - $20.00
KT-GL15AX2: GL1500 Aux Retrofit Kit (send radio to us for modification)  - $104.99

Switch Assembly
Required. A switch to select Auxiliary or Intercom is required. Choices include a pigtail to connect to a switch (SPST style) that you provide; a Relay Timer that allows switching by briefly flashing your high beam, or a pre-assembled switch assembly that must be mounted on your bike (drilling required).
KT-SWPT-95432: Pigtail for customer-supplied switch (drawing) - $10.00
KT-SWRD-95430: Round Rocker Switch (drawing) - $15.00
KT-SWRT-95428: Relay Timer (flash high beams to switch) (drawing) - $55.00
KT-SWSQ-95429: Square Rocker Switch (drawing) - $15.00
KT-SWTG-95431: Small Toggle Switch (drawing) - $15.00

Combo/Audio Device Harness
Required. Connects the Combo Device to the CellSet MC/3. If the harness indicates "With Power", the Combo Device will be powered by this harness and no separate power cord is required. If the device indicates "Mic Harness Required" then the microphone circuit is not tied in through this harness and a separate mic harness is required.
KT-DS35F-95433: 3.5mm Stereo Female (Mic Harness Required) - $30.00
KT-DS35S-95371: 3.5mm Stereo straight plug (Mic Harness Required) (drawing) - $30.00
KT-DS35SH-95517: 3.5mm Stereo, 6" long cable (Mic Harness Required) (drawing) - $30.00
KT-DS35SR-95370: 3.5mm Stereo right angle plug (Mic Harness Required) (drawing) - $30.00
KT-DX2820-95412: Garmin StreetPilot 2820 with Power (drawing) - $85.00
KT-DX550-95423: Garmin Zumo 550 with Power (drawing) - $95.00
KT-DX660-95515: Garmin Zumo 660/665 with Power (drawing) - $50.00
KT-DXIPH1-95486: Smartphones w/ 3.5mm jack (e.g. iPhone, Blackberry, HTC) (drawing) - $45.00
KT-DXIPHPS-95526: iPhone / iPhone 3G / iPhone 3GS with Power (drawing) - $75.00
KT-DXNV6-95447: Garmin GPS with Bluetooth (No Power) (drawing) - $55.00
KT-DXNV6P-95446: Garmin Nuvi 6xx/7xx/8xx/5000 with Power (drawing) - $85.00
KT-DXXBI-95528: Chatterbox XBi/XBi2, with Power (drawing) - $85.00

Mic Harness
Optional. Connects the Mic Input jack on the Combo Device to the motorcycle's intercom circuit. Required only if the Combo/Audio Device Harness chosen indicates "Mic Harness Required".
No Mic Harness
KT-DM25-95417: Garmin 2.5mm Mic jack (2820, Zumo 550, Nuvi 360/670/680, etc) - $30.00
KT-DM25SH-95516: Garmin 2.5mm Mic jack, short cord (Zumo 660/665) - $30.00

Bluetooth Terminal
Optional. Chatterbox Bluetooth terminal allows linking Bluetooth device such as a cell phone, GPS, iPod, etc. to the interface wirelessly. Stereo Bluetooth is supported. The XBi2 option also allows you to communicate with another motorcyclist who is using a Chatterbox XBi2 helmet kit (sold separately). Requires KT-DXXBI-95228 Combo Device Harness.
No Bluetooth Terminal
KT-XB1: Chatterbox XBi (short-range Bluetooth functions) - $134.94
KT-XB2: Chatterbox XBi2 (Bluetooth with bike-to-bike range) - $184.94