What codes are you looking for ? Is that the speaker wire colors are grey/grey w/black stripe, white/white w/black stripe, purple/pruple w/black, green/green w/black stipe. The black stipe wires is the negative. If you don't have tags on the wires that say; LR,LF,RR,RF. There is another way to find which speaker wire goes where. First hook-up your Battery and Accessory and negative wires. Then just go in the unit and find the balance and fader control. Then just do one side at a time; like front left, rear left and so on....
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