Stinger voltmeter?

Wire it like this:

https://ibb.co/ypYdxyy

Best i can do for ya, im at work.

You don't need a relay for just adding a volt meter remote wire. 

I have had 6 amps and 2 volt meters off the remote wire with no issue,.

any car parts shop like autozone will have one if you want it today. guessing $7?

or i buy them in bulk so i have extra for a couple bucks more

https://www.amazon.com/Support-Relay-Spst-4pin-Pack/dp/B00RWVLMI4/ref=sr_1_fkmr2_1?keywords=12-VCD%2BAutomotive%2BRelay%2BSPST&qid=1557515487&s=electronics&sr=8-1-fkmr2&th=1

Popwarhomie said:

You don't need a relay for just adding a volt meter remote wire. 

I have had 6 amps and 2 volt meters off the remote wire with no issue,.

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ive always added a relay to my volt meters, as i really dont care what the headunit output voltage is, as it may not always be the same as the Battery/amp terminal. I dont know if there is any influence such as capacitance that can give a false reading from what amp actually is seeing. better safe than sorryimo. and for roughly $2 and 15 min, i know its good.  just my .02

The remote wire is just a turn on source...

The volt meter reads voltage from the positive and negative which will be at the amp terminals.

In no way would it read headunit voltage.

The only reason to add a relay for a remote wire is when you are running alot of amps and the headunit remote isn't enough to trigger all the amps to turn on. 

You don't need a relay for a volt meter....

Popwarhomie said:

The remote wire is just a turn on source...

The volt meter reads voltage from the positive and negative which will be at the amp terminals.

In no way would it read headunit voltage.

The only reason to add a relay for a remote wire is when you are running alot of amps and the headunit remote isn't enough to trigger all the amps to turn on. 

You don't need a relay for a volt meter....

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Not sure i follow.. I assumed you were using the remote terminal, and ground to turn on the voltmeter when i wrote the comment above. Otherwise, you would use Batt and gnd from amp which will keep the meter on until battery is depleted.

How are you sure that the remote voltage coming from the headunit isnt manipulated/delayed?? isnt it easier to just install a relay that to wonder or actually figure out the internal circuitry?

I just looked up a "stinger" volt meter, and seen most have 3 wires! thats the reason i wasnt getting it. I only have 2 wire voltage gauges, hence my diagram in post #2, and the 3 wire has its own turn on.

Sorry Popwarhomie, wasnt trying to be a d*ck,

poolman966554 said:

I just looked up a "stinger" volt meter, and seen most have 3 wires! thats the reason i wasnt getting it. I only have 2 wire voltage gauges, and the 3 wire has its own turn on.

Sorry Popwarhomie, wasnt trying to be a d*ck,

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I have two vm. An SMD analog and SQ digital. Both have a remote turn on.  I was considering getting meters with only a two wire setup and then set up a rocker switch for them, but these meters turned out to be the ones I wanted.  Probably should look up how +5v turn on circuits are setup/isolated to clearly see what is going on.

nate0 said:

 I was considering getting meters with only a two wire setup and then set up a rocker switch for them, 

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Thats a great way to have a dead battery after you "forget" to turn them off lol. in the 2 wire world, relay is the way to go imo

poolman966554 said:

I just looked up a "stinger" volt meter, and seen most have 3 wires! thats the reason i wasnt getting it. I only have 2 wire voltage gauges, hence my diagram in post #2, and the 3 wire has its own turn on.

Sorry Popwarhomie, wasnt trying to be a d*ck,

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All good. I didn't see you were talking about a 2 wire meter.

poolman966554 said:

Thats a great way to have a dead battery after you "forget" to turn them off lol. in the 2 wire world, relay is the way to go imo

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Not likely on a volt meter unless you leave it running for a week.