Boss Audio Systems Ultimate Guide to 20 Pin Car Stereo Connector and Wiring Harness Diagrams

4. WIRING DIAGRAM (20 PIN + ISO PLUG)

ANT.
L	L
FUSE	R
R
REAR	FRONT	SUB-W OUT

PIN(B8) GREEN/BLACK PIN(B7) GREEN PIN(B6) WHITE/BLACK PIN(B5) WHITE PIN(B4) GREY/BLACK PIN(B3) GREY PIN(B2) VIOLET/BLACK

PIN(B1) VIOLET

20-PIN

AUDIO/POWER

HARNESS

(See Figure 1)

PIN(A8) BLACK PIN(A7) RED PIN(A5) BLUE PIN(A4) YELLOW

REAR LINE OUT R-CH

RCA-TO-RCA CABLE (Not Supplied)

REAR LINE OUT L-CH FRONT LINE OUT R-CH FRONT LINE OUT L-CH SUB-W OUT

CONNECTOR	3	4	3	4	CONNECTOR
	7	8	7	8
	5	6	5	6
B					A
	1	2	1	2

Figure 2

ISO CONNECTOR 4PIN+8PIN

FEMALE WITH MALE TERMINAL

ISO

CONNECTOR

(See Figure 2)

PIN	WIRE COLOR	FUNCTION/LABEL
1	GREY/BLACK	RIGHT FRONT SPEAKER (-)
2	GREY	RIGHT FRONT SPEAKER (+)
3	VIOLET	RIGHT REAR SPEAKER (+)
4	VIOLET/BLACK	RIGHT REAR SPEAKER (-)
5
6	GREEN	LEFT REAR SPEAKER (+)

ISO CONNECTOR WIRING CHART

PIN	WIRE COLOR	FUNCTION/LABEL
A4	YELLOW	CONSTANT 12 VOLTS
A5	BLUE	POWER ANTENNA/REMOTE TURN ON
A7	RED	IGNITION(ACC)
A8	BLACK	GROUND
B1	VIOLET	RIGHT REAR SPEAKER (+)
B2	VIOLET/BLACK	RIGHT REAR SPEAKER (-)
B3	GREY	RIGHT FRONT SPEAKER (+)
B4	GREY/BLACK	RIGHT FRONT SPEAKER (-)
B5	WHITE	LEFT FRONT SPEAKER (+)
B6	WHITE/BLACK	LEFT FRONT SPEAKER (-)
B7	GREEN	LEFT REAR SPEAKER (+)
B8	GREEN/BLACK	LEFT REAR SPEAKER (-)

7	GREEN/BLACK	LEFT REAR SPEAKER (-)
8	RED	IGNITION(ACC)
9
10
11	WHITE	LEFT FRONT SPEAKER (+)
12	WHITE/BLACK	LEFT FRONT SPEAKER (-)
13
14	BLUE	POWER ANTENNA/REMOTE TURN ON
15	YELLOW	CONSTANT 12 VOLTS
16	BLACK	CHASSIS GROUND
17

18

19

20

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