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backfeeding the electrical system

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Old Nov 27, 2010 | 09:30 AM
  #1  
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Default backfeeding the electrical system

I want to change my battery and probably the terminals. I have a flashing alarm LED on my dash which makes me think there's some type of alarm system that I don't have a remote for.

I need to keep 12V on the system while the battery's out (I'm afraid if the "alarm" looses power it might go into some sort of immobilization mode). Could I use a couple lantern batteries and a lighter plug to plug into the accessory outlet on the dash? Will this power everything that needs to be powered?

And most important....Will I fry anything?

thanks
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Old Nov 27, 2010 | 09:47 AM
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Most autoparts stores sell a tool that plugs into the accessory outlet that keeps everything powered....it's not to expensive.

Here is one I found online.

http://www.nationaltoolwarehouse.com...qx/product.htm



Last edited by repair; Nov 27, 2010 at 09:54 AM.
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Old Nov 27, 2010 | 10:16 AM
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the flashing LED isn't stock. go through under the dash, find the unit that's plugged into it, and remove it. then you won't have an issue.
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Old Nov 27, 2010 | 10:59 AM
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Originally Posted by repair
Most autoparts stores sell a tool that plugs into the accessory outlet that keeps everything powered....it's not to expensive.

Here is one I found online.
Thanks Repair

I called ahead to have the battery tested. Of course it wasn't ready. So while I was walking around, sure enough they had one of those adapters.

$5.00 - no problem for some peace of mind.
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Old Nov 27, 2010 | 11:04 AM
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Originally Posted by JeepCoMJ
the flashing LED isn't stock. go through under the dash, find the unit that's plugged into it, and remove it. then you won't have an issue.
That's what I really need to do. The override is connected to the turn signal switch. Knock on wood, it's started every time, but sooner or later I have to do something about it. It'd be nice if I could at least ID the unit. Maybe it's got remote start and I could track down a remote for it.
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Old Nov 27, 2010 | 02:26 PM
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Originally Posted by bobvalli
Thanks Repair

I called ahead to have the battery tested. Of course it wasn't ready. So while I was walking around, sure enough they had one of those adapters.

$5.00 - no problem for some peace of mind.
Just an update

Little adapter did awesome

Swapped the battery, started right up. All presets and everything held.

Nice !!!!

thanks
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Old Nov 27, 2010 | 09:51 PM
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Originally Posted by bobvalli
Just an update

Little adapter did awesome

Swapped the battery, started right up. All presets and everything held.

Nice !!!!

thanks
Glad to hear it!
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