Newbie please help

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Hello everyone, I purchased my first sportrak the other day with only one light working, turns out someone had just ran a live to a light in the rear so it had something there, anyway I completely hardwired a new rear loom so I now have brake lights etc, went out last night and noticed that the temp guage, volt meter, heaters and I think the fuel guage are no longer working, are these all linked together? I have checked the fuse and that's all okay, does anyone know the location of the earthing point for these things, many thanks

Buy a CD.

You need a wiring diagram. Also the year of manufacture to get the correct wiring diagram. Many owners have a w/s manual on disc which has all the information you need.
Have you checked the fuse-able link on the main battery?