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<blockquote data-quote="gshaw" data-source="post: 8734212" data-attributes="member: 682173">Backstory - bought an excavator - speakers were shot, decided to upgrade from cassette radio to bluetooth and pop in a couple new 5&#039; speakersbought basic equipmentexisting unit - no model/serial&nbsp; &nbsp;&nbsp; inputs - ACC, CONSTANT, GROUND, SPEAKERS(2 units tried) BOSS 616UAB - IDENTICAL CONNECTIONS AS FACTORY UNIT, TRUE PNP&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; DUAL XDM17BT - HARNESS NEEDEDSo both units act similarly in that they receive power and &quot;turn on&quot; but flash their illuminating buttons just once at turn on, never come back, and the LED stays on but wont respond to buttonsthought the BOSS units was effed, put the OEM in and it worked fineput the DUAL in after the OEM, and got the same result as the BOSStested ground - OKtested 12vdc constant - 15.9vdctested acc - 15.9vdccould it be overvoltage? i tried looking up the specs for some units, i only need literally the cheapest bluetooth unit on the market as its just my excavatorsome units have a dc voltage rating of 11-14vdc (as in the boss unit) the dual had no such infoother units ive seen go as high as 16vdc tolerancethanks in advance fellas - probably just a one trick pony on this forum but i heard it was the best place for this kind of question so here i am. much respect</blockquote>

[QUOTE="gshaw, post: 8734212, member: 682173"] Backstory - bought an excavator - speakers were shot, decided to upgrade from cassette radio to bluetooth and pop in a couple new 5' speakers bought basic equipment existing unit - no model/serial inputs - ACC, CONSTANT, GROUND, SPEAKERS (2 units tried) BOSS 616UAB - IDENTICAL CONNECTIONS AS FACTORY UNIT, TRUE PNP DUAL XDM17BT - HARNESS NEEDED So both units act similarly in that they receive power and "turn on" but flash their illuminating buttons just once at turn on, never come back, and the LED stays on but wont respond to buttons thought the BOSS units was effed, put the OEM in and it worked fine put the DUAL in after the OEM, and got the same result as the BOSS tested ground - OK tested 12vdc constant - 15.9vdc tested acc - 15.9vdc could it be overvoltage? i tried looking up the specs for some units, i only need literally the cheapest bluetooth unit on the market as its just my excavator some units have a dc voltage rating of 11-14vdc (as in the boss unit) the dual had no such info other units ive seen go as high as 16vdc tolerance thanks in advance fellas - probably just a one trick pony on this forum but i heard it was the best place for this kind of question so here i am. much respect [/QUOTE]

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