Question about Pioneer DEH-P4100
There are 2 battery supplies to the radio,.
The main one via the ignition key circuit for the radio itself.
The other one is a permanent battery feed to the radio memory.
It is this second (permanent) feed that is missing.
Check the fuse, connectors + wiring to see if there is anything obvious.
If you have a multimeter or test lamp then that can be used to prove the problem
Posted on Sep 04, 2010
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Posted on Jan 02, 2017
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