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question about my F-150. aaahhhhhh!!!
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<blockquote data-quote="chris229" data-source="post: 87295" data-attributes="member: 542614"><p>I agree again plus lets add----</p><p>Instead of removing the door plans a couple of times--- break out your DDM [digital multi meter]</p><p></p><p>pull the HU out of the dash ---------removing speaker wires from it</p><p></p><p>test each channels resistance------- both across the +/- of each channel and resistance to ground[car body]----------------- this will tells you -------</p><p></p><p>low resistance across channel--------------- either +/- are crossed OR just too low for the HU---------check this spec against the HU's recommended ohm load</p><p></p><p>low resistance to ground[car body] -------------- if you even get a reading ---- it means that you have that channel's wire damaged/ touching the car body and grounding out-----very bad</p><p></p><p>let us know if this seems to check out-------we will move on to other testing</p></blockquote><p></p>
[QUOTE="chris229, post: 87295, member: 542614"] I agree again plus lets add---- Instead of removing the door plans a couple of times--- break out your DDM [digital multi meter] pull the HU out of the dash ---------removing speaker wires from it test each channels resistance------- both across the +/- of each channel and resistance to ground[car body]----------------- this will tells you ------- low resistance across channel--------------- either +/- are crossed OR just too low for the HU---------check this spec against the HU's recommended ohm load low resistance to ground[car body] -------------- if you even get a reading ---- it means that you have that channel's wire damaged/ touching the car body and grounding out-----very bad let us know if this seems to check out-------we will move on to other testing [/QUOTE]
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question about my F-150. aaahhhhhh!!!
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