Jensen VX7020 Operating Instructions Manual page 101

The VX7020 has a built-in SWC Interface compatible with most resistive type OE steering wheel controls. In most installations, only two of the three wires will be needed to
interface the OE steering wheel controls to the VX7020.
SWC A - Primary SWC Wire
SWC B - Secondary SWC Wire
SWC Ground - Chassis ground
Initial wiring of the SWC interface should include the SWC A and SWC Ground wire. If this combination of wiring does not support your vehicle functions, then try the SWC B
and SWC Ground wire combination. Do not use only SWC A and SWC B. The SWC Ground must be connected.
Some vehicles may not support all SWC functions. Professional Installation is recommended.
WHITE
WHITE/BLACK
GRAY
GRAY/BLACK
PURPLE
PURPLE/BLACK
GREEN
GREEN/BLACK
YELLOW
BLACK
RED
ORANGE
BLUE
PINK
GREEN/WHITE
BROWN/BLACK
WHITE/PURPLE
WHITE/BROWN
SWC (BLACK)
LEFT FRONT SPEAKER (+)
LEFT FRONT SPEAKER (-)
SPEAKER (+)
RIGHT FRONT SPEAKER (+)
SPEAKER (-)
RIGHT FRONT SPEAKER (-)
RIGHT REAR SPEAKER (+)
RIGHT REAR SPEAKER (-)
LEFT REAR SPEAKER (+)
LEFT REAR SPEAKER (-)
BATTERY 12V (+)
GROUND
ACC / IGNITION
ILLUMINATION
)
POWER ANT & AMP. CONT
BRAKE
REVERSE
KEY GND
KEY A
KEY B