Volt meter wiring questions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Nazdog247 · 06-29-2014, 08:41 PM

I'm installing a volt meter gauge in my car. I'm just wonderining where have people hooked the wire that reads the Volts up to. Thanks I've heard of ppl running them thru a fuse I jus need to know which one thank you

Kaifd3s · 07-02-2014, 10:31 AM

Why a volt meter? I would choose so many more things to monitor instead of that.

If you have to, any 12v switched circuit should tell you voltage of the car. If you want truly accurate readings hack into the alternator wiring.

badATcustomerservice · 07-02-2014, 01:08 PM

Never heard of someone installing a volt meter before but whatever floats your boat.

quickdiversion · 07-02-2014, 02:05 PM

I have heard of a lot of subaru guys do this because they have voltage drop issues on the highway.

All you have to do though like he said is just hook it up to the battery with the ground wire switch to turn it on and off. Simple

crash n' burn · 07-06-2014, 03:05 PM

honestly, the only need to check voltage on this car is to make sure your fuel pump is receiving enough voltage/current to function correctly and not starve your engine during high rpms and aggressive driving (which is why people relay their fuel pumps). not telling you its a dumb idea, but its unnecessary.

if you were to do it though, you need to throw your gauge's signal/pos+ wire on the alternator output terminal and ground the gauge's neg- wire to the chassis. no sense having the gauge unless you're measuring at the source.

06-29-2014, 08:41 PM	#1
Nazdog247 Join Date: Feb 2014 Location: Bay Area Posts: 42 Trader Rating: (0) Feedback Score: 0 reviews	Volt meter wiring questions I'm installing a volt meter gauge in my car. I'm just wonderining where have people hooked the wire that reads the Volts up to. Thanks I've heard of ppl running them thru a fuse I jus need to know which one thank you

07-02-2014, 10:31 AM	#2
Kaifd3s Zilvia Addict Join Date: Feb 2008 Location: Tamarac, Florida Age: 35 Posts: 694 Trader Rating: (16) Feedback Score: 16 reviews	Why a volt meter? I would choose so many more things to monitor instead of that. If you have to, any 12v switched circuit should tell you voltage of the car. If you want truly accurate readings hack into the alternator wiring. __________________

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07-02-2014, 01:08 PM	#3
badATcustomerservice Join Date: Jul 2014 Location: ATL Age: 36 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Never heard of someone installing a volt meter before but whatever floats your boat.

07-02-2014, 02:05 PM	#4
quickdiversion Zilvia Junkie Join Date: Aug 2012 Location: nj Age: 38 Posts: 341 Trader Rating: (4) Feedback Score: 4 reviews	I have heard of a lot of subaru guys do this because they have voltage drop issues on the highway. All you have to do though like he said is just hook it up to the battery with the ground wire switch to turn it on and off. Simple

07-06-2014, 03:05 PM	#5
crash n' burn Zilvia Junkie Join Date: Sep 2012 Location: Colorado Age: 32 Posts: 507 Trader Rating: (11) Feedback Score: 11 reviews	honestly, the only need to check voltage on this car is to make sure your fuel pump is receiving enough voltage/current to function correctly and not starve your engine during high rpms and aggressive driving (which is why people relay their fuel pumps). not telling you its a dumb idea, but its unnecessary. if you were to do it though, you need to throw your gauge's signal/pos+ wire on the alternator output terminal and ground the gauge's neg- wire to the chassis. no sense having the gauge unless you're measuring at the source.