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i have to find a positive hot inside the car

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Old 09-15-2009, 04:43 PM
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disposablehero27
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Question i have to find a positive hot inside the car

cigarette lighter is burnt out or some crap, changed the fuse under hood no changes, so i can't use the hot wire from that to work my speedo calibrator.. so i gotta find another positive, anyone have an idea? i can run it straight to the battery, but anything easier?
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Old 09-15-2009, 04:49 PM
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masterofthepuppets99
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check your fuse box. theres gotta be a hot line in there
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Old 09-15-2009, 04:53 PM
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disposablehero27
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If i connect it to the fuse box, i'm getting its an aux. port... would i still have to have a fuse directly to it? since i won't be using the cigarette lighters fuse? i imagine i would. any other place i can just wrap it and go like the cigarette lighter?
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Old 09-15-2009, 08:39 PM
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0949er
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you can try to hook it up to the radio's +12V. The hot one not the switched one. Just split the wire off there just make it clean. (with some electrical tape and wire nut if possible). Should be fine.
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Old 09-16-2009, 12:31 AM
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gunpig0313
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There's a plug in the center console check that one. Mine up by the shifter blew a fuse the other day but the one in the console still works fine.
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Old 09-17-2009, 07:34 AM
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mustang51js
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if you got the dallas mustang speedcal it prob wont work anyway,i cant get mine to work rite no matter what code i put in, also you could just run a direct line to the battery if you had to.
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Old 09-17-2009, 07:35 AM
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mustang51js
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or in the ignition
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Old 09-17-2009, 10:00 AM
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im telling you.... the hot for the radio is right there at your Cig lighter.....
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Old 09-17-2009, 10:51 AM
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Jazzer The Cat
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The questions that need to be asked here WHENEVER power demand items are connected:

1. What is the amperage demand of your item?
2. Does it need to be switched via ignition or power at all times?

Sounds like the speed cal. is likely a low power draw, as it would appear that the cig. lighter supply is normally used. It also sounds like it needs full-time power due to this "normal" connection point.

With that said, you need a volt meter to find an open connection in your fuse box and run a minimal fuse rated for your item.

Jazzer and Ice-T.... The Power
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Old 09-17-2009, 11:18 AM
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cliffyk
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The cigar lighter is a rather high capacity, unswitched, source (a dedicated 20A line), the "power-point" in the center console is also a 20A dedicated circuit.

The pink/black wire at the traction control switch is a good switched (hot in RUN) source, it is supplied from a 15A fuse that powers only the t/c switch and the instrument cluster--both relatively low power need loads.

If you have a coupe there may be an unused connector for the convertible top behind the shift bezel--the white/violet wire at that connector is fed from a 20A fuse (#20 in the CJB, which may not be installed and is hot in RUN or ACC).
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