Need a idea of hat colours do what im struggling to wire up a new head unit
If you have a new head unit then you should have (or can download) the wiring layout for the unit. In regard to the car, you will have a number of wires to identify. Try following these steps:
1. With ignition off. Using a meter or test lamp identify the wire that has permanent 12V. Note this and protect the end (tape it) to stop accidental shorts. This is your permanent 12V.
2. With the ignition on look for another wire that now has 12V. Verify that it comes and goes when you turn the ignition switch. Note this and protect the end of this one also. This is your switched 12V.
3. With the ignition off, and the meter set to measure resistance check the remaining wires for one that shows connection/short to a solid chassis ground point. This is your earth.
4. Speaker wires should be fairly obvious pairs solid colours with a mate that is the same solid colour and a stripe e.g. last one I did was green + green and black stripe on one side and grey + grey/black on the other. To ID left and right just get an AA battery and touch this wires on each end of the battery you will hear a scratching noise in the speakers. Note which colour goes to which side.
5. Wire remaining (if any) will be a remote power antenna lead if fitted.
Shouldnt be any added complexity in a 94 car.
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