Measure the blue/white wire on the receiver/head unit before you connect to the antenna adapter power lead, and then after. Many radios only turn on ANT lead power if AM/FM is selected. The current is limited on the ANT power lead so it could be activating current limit if something is shorted on the harness/ANT adapter you are using...Wild-*** Guesses.
Last edited by Fountainhead; 06-05-2014 at 10:57 PM.
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