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Radio wires

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user 14013

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Hi I have tried to establish what the three unlabelled circuit breakers were supposed to connect to. They all have wires connected to them but they disappear into a bundle of wires that it looks like a number of changes have been made to over the past 40 years. Does anyone know of a PDF online that lists the destinations of the wires as unfortunately the maintenance manual does not list avionics wires and I can’t seem to find any info online.
The wires are labeled RP1 etc. the problem I have apart from unmarked CBs is the wires don’t go where they say they should e.g. nav/ com2 does not go to radio 2 as there is another CB marked comm2 that goes to radio 2.
Any help would be appreciated.
 

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