wiring colours to 4wd switch help

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after looking for the 4wd switch on my 1996 fieldman i have realised that its been changed from the standard switch, i have a few switches that have been changed, i have an idea which one it is but not 100% sure, i cant put it on to check as my 4wd light is permenantly on at the moment and the weather is not the best for getting under the truck to check the plunger switches, i know at the moment its not in 4wd unless i go into low, however i need to know which switch it is that controls 4wd high, so can anyone tell me what colour wires go to it, have looked till i`m blue in the face at the online manuals and still cant see a colour chart for the wiring - cheers in advance