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Old 06-12-2015, 08:12   #1
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New dc tv. Witch wire is +

Members,

I would like to cut the end off the dc cigarette lighter plug and wire it directly to a dc terminal block. One wire has writing and the other has long dashs. The directions don't cover this.

Thanks in advance, Woody

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Old 06-12-2015, 08:21   #2
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Re: New dc tv. Witch wire is +

... I would never trust 'the labeling' so cut the cigarette lighter plug away one inch from the plug and measure the 'resistance' from the cable ends to the plug.

The wire that went to the middle/center of the cigarette lighter plug is the PLUS wire.

Good luck ;-)

Carsten
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Old 06-12-2015, 08:22   #3
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Re: New dc tv. Witch wire is +

After you cut it, take your multi-meter and determine with it which wire is connected to the center of the DC plug. If you don't have a multimeter, get one, you will need it, it's as useful as a screwdriver


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Old 06-12-2015, 08:30   #4
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Re: New dc tv. Witch wire is +

Thanks, I didn't want to fry it on day one.

Woody
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Old 06-12-2015, 09:27   #5
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Re: New dc tv. Witch wire is +

Sometimes the plug contains an integral fuse. Don't forget to include one in the line before you connect the power cord to the house circuit. Don't connect to a starter circuit because hitting the engine ignition draws too much current and makes the tv reboot.
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Old 06-12-2015, 09:50   #6
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Re: New dc tv. Witch wire is +

split the lighter fitting open the wire going to the end of the lighter plug is your positive
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Old 06-12-2015, 10:18   #7
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Re: New dc tv. Witch wire is +

just get out your multimeter and set it to V DC connect it to the bits of wire left in your plug and plug it into a cig lighter. if it come out -12... then your have your meter leads reversed. switch them and note which wire the red probe is connected to. thats your positive
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Old 09-12-2015, 09:32   #8
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Re: New dc tv. Witch wire is +

Ok, that was easy. I do have one more question. In order to test the tv I took an old one wire fm antenna and plugged it into the coaxial cable on the dinette table. To my surprise I pulled in all the Miami and Palm Beach stations 25 to 30 miles away. Will a single wire work long range if high enough?

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