Volt meter

[7ender 10+ year member]

I'm about to bid on this volt meter to install in my second DIN slot, but just wanted to make sure it was the right one.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=370227030557&viewitem=&sspagename=STRK%3AMEWAX%3AIT&salenotsupported

It doens't require a power source (i'm asuming it just takes it from the one it's reading).

But how do these know when to turn on/off? It won't just stay on when my car's off right?

Thanks

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[7ender 10+ year member]

Nobody?

 

[csu87 10+ year member]

mine turns off after a certain amount of time. not sure how it knows when to turn off but it does.

 

[d-REW 10+ year member]

10 t0 15 days delivery? **** i hope u dont need it fast

 

[microhaxo 10+ year member]

Hmm, I would rather know the Ac voltage off my amp than my battery voltage..

That way i know exactly how many RMS i am pulling on any given song.

 

[BeAlLsTaR13 10+ year member]

Hmm, I would rather know the Ac voltage off my amp than my battery voltage..
That way i know exactly how many RMS i am pulling on any given song.

im sure you could wire it to the amp instead of the battery so you would know, but who knows.

 

[JimJ 5,000+ posts]

Hmm, I would rather know the Ac voltage off my amp than my battery voltage..
That way i know exactly how many RMS i am pulling on any given song.

You'd also need an ammeter reading current to know that.

 

[microhaxo 10+ year member]

just by reading voltage you can get a nice estimate of that. 27volts off the amp is around 729w at 1 ohm in a nice world, if you factor in efficiency and other factors it is less but for the most part its accurate according to my fluke clamp meter.

 

[bumpin buick 5,000+ posts]

You'd also need an ammeter reading current to know that.

You mean its not built into my cap //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[Ellsworthz 10+ year member]

don't be a cheap *** and get a stinger like the rest of us.

 

[7ender 10+ year member]

Hmm, so looks like it will work though right?

My main concern is there is not remote turn on lead or anything so I don't understand how it'll know when to turn on/off. It won't stay on 24/7 right?

 

[microhaxo 10+ year member]

make a radio shack kill switch, or just use a relay and wire it into the fuse box, so when car off the volt meter off.

 

[7ender 10+ year member]

I was just doing some reading and I read most of these volt meters will automatically turn on and off when they sense a change in voltage. Can anybody confirm this or know if the one I linked has this?

 

[7ender 10+ year member]

On second thought, i'm pretty sure this one won't do that.

I dont' really know how to wire it now...remote turn on leads wont give a voltage reading right?

If I want to measure "voltage drops" I want to wire to the battery, not amps right? If this is the case it'll be easy since I can just tap into the HU power....

Advice?

 

[alvitae 10+ year member]

When you hook up a h/u you use a constant hot and the switch hot so the head unit doesn't stay on when you turn your car off. Can you hook it up to the same switch wire?