Owner's Manual

6
Original Style SWI Harness Wire Description
Purple Loop: When intact, it provides 5 volts to the white wire’s circuit. In some instances the installation instructions
will have you manipulate this connection for specific applications. Leave as is unless vehicle specific instructions indicate
otherwise.
Black: Ground wire. Connects to vehicle ground. In some cases it may be necessary to connect directly to the
vehicle chassis to secure a good ground.
Blue: HVAC Data Output wire (used with version 4). This wire is only used for specific GM applications where
the AC and Fan controls were located in the steering wheel and were lost when the factory radio is disconnected. The
SWI instructions will indicate using Version 4 for these applications. Version 4 programming requires the Temp and Fan
buttons to be programmed before the radio control buttons (provided programming instructions will indicate the exact
procedure).
White: Analog 5 volt Resistive Control wire (used with versions 3, 8, 9 and 11). This wire is used for connection
to the steering wheel control wire for most Honda, Toyota, Nissan applications along with non CAN bus Fords and Harley
Davidson motorcycles. Additional information regarding how to test discussed later (click here).
Red: Accessory 12 volt wire. Connects to accessory 12 volt circuit in vehicle. In some cases it may be
necessary to wire to a relay. Additional information on this discussed later.
Yellow: 12 volt Data Control wire (used with version 5). This wire is used for connection to the steering wheel
control wire for many BMW and Mini applications (non-CAN Bus). Additional information regarding how to test for this
wire discussed later (click here).
Orange: 5 volt Data Control wire (used with versions 6 and 7). Most commonly, this wire is used for connection to
the radio control wire for the rear controls in specific Ford applications allowing specific buttons to operate the
aftermarket radio. In these cases, you can use two SWI interfaces (one connected to the front control wire and one
connected to the rear control wire) in tandem so that the steering wheel controls and the rear seat controls can be
retained. Radios that use the 3.5 mm jack for the steering wheel control input will require a Y-Adapter to allow both
SWI interface outputs to be connected into the single 3.5 mm jack input on the radio. Additional information regarding
how to test for this wire discussed later (click here).
Green: Analog 12 volt Resistive Control wire (used with versions 1 and 2). This wire is used for connection to the
steering wheel control wire for most GM applications along with the steering wheel control output wire from many of
the PAC interfaces that convert a data steering wheel control wire to an analog output (SWI-CAN, SWI-CAN2, OS-4, etc.).
Additional information regarding how to test for this wire discussed later (click here).
Brown Loop: When intact, it provides 560 ohms of resistance to the green wire’s circuit. In some instances the
installation instructions will have you manipulate this connection for specific vehicle applications. Leave as is unless
vehicle specific instructions indicate otherwise.