Frontera 1992-1996

Front left speaker - yellow, blue
Front right speaker - green, grey
Rear left speaker - white, red/white
Rear right speaker - black, black/yellow
Live(Positive) - red/white
Negative - black
Ignition live - brown/white
Illumination - green/blue


Frontera 1995-1998

Front left speaker - blue, yellow
Front right speaker - green, green/yellow
Rear left speaker - white, white/red
Rear right speaker - black, black/yellow
Live(Positive) - red/white
Negative - black
Ignition live - slate/white
Illumination - green/blue


NB:If you have any doubts you should consult a qualified auto electrician.