Who knows how to check speaker wire polarity?
Ladies and gents, I'm in the middle of changing out TVs, both front and rear on our '04 Itasca Horizon 36GD with the C-7 330HP CAT. Now, a small amount of history here. Winne and Itasca, in that era...
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magicbus wrote:So this is assuming that the radio 'pops' when you turn it on? I can't think of an auto radio that pops in the last probably 30 years to detect. Second, assuming the amp does surge on power-up, that this is being done with a DVM since there are very few of us that even knows what a Simpson is ( :) ).... that would have a be an extremely fast sample rate, or just lucky to catch it. Certinaly not with a Harbor Freight $5 special
That's what I would try. Set it on low range DC, put it across the wires and turn on the radio. If it shows positive you are POS on POS. If it goes negative your meter wires are reversed. This should let you mark the wires coming from the radio.
