Early FJ40 Wire Colors

Toyota Code	Primary/Stripe	Toyota Code	Primary/Stripe	Toyota Code	Primary/Stripe	Toyota Code	Primary/Stripe	Toyota Code	Primary/Stripe	Toyota Code	Primary/Stripe
B	Black	G	Green	L	Blue	R	Red	Y	Yellow	W	White
		GB	Green/Black	LB	Blue/Black	RB	Red/Black	YB	Yellow/Black	WB	White/Black
						RG	Red/Green	YG	Yellow/Green	WG	White/Green
		GL	Green/Blue			RL	Red/Blue			WL	White/Blue
		GO	Green/Orange
BR	Black/Red	GR	Green/Red	LR	Blue/Red			YR	Yellow/Red	WR	White/Red
BW	Black/White	GW	Green/White	LW	Blue/White	RW	Red/White
BY	Black/Yellow	GY	Green/Yellow	LY	Blue/Yellow	RY	Red/Yellow

There are six primary colors used: Black,Green,Blue,Red,Yellow and White and seven stripe colors Black, Green, Blue, Red, Yellow, White, and Orange. This gives a total of 31 combinations!

As a general guide Toyota colors are grouped according to function:

Green wires are used for the Horn, Turn signals, Park lights, Brake lights, Transfer case indicator switch, Inspection light.

Blue wires are used for the Wipers, and heater circuits.

Red wires are used for the Head lights, Gauge Cluster lights, Back up light and switch, brake light switch.

Yellow wires are used for the transfer case indicator light, Oil, Temp, Fuel Gauges.

White wires are used for power and ground circuits.

Black wires are used for the Starter, Ignition, and Ground circuits.

I'm sure I missed a few applications but this will give you a rough guide when you see a wire.

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