Gauge hook up ?'s
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Senior User
Joined: Oct 2005
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From: Livonia Michigan
Gauge hook up ?'s
I'm thinking of putting a set of gauges under my hood to help with tuning the engine and also being able to monitor changes I make almost instantly. My question is can I just run new wires to the existing sending units and will it effect the readings. I have to add electrical gauges for volts,oil pressure,tach and water temp.I"m also have a vacuum gauge but I will have to hook up that tubing to the manifold.
Any thought's
John F.
Any thought's
John F.
Senior User
Joined: Nov 2008
Posts: 276
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From: Nashville NC
Well, it would save some time from not having to walk around & look at the dash & I guess if everything is hooked up right they should read the same, just dont cross no wires & burn up something.
Be interesting to see what the difference in readings will be between the gauges & after each are hooked up.
Take note of the readings before the hook up & after to see is any affect from haveing two gauges hooked together on one sending unit.
Neil
Be interesting to see what the difference in readings will be between the gauges & after each are hooked up.
Take note of the readings before the hook up & after to see is any affect from haveing two gauges hooked together on one sending unit.
Neil
Hotshot
Joined: Dec 2003
Posts: 18,423
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From: iowa
Actually I don't believe you can do that. Since the electrical gauges work by sending voltage TO the sending unit and the unit grounds it through a resistor that changes as the reading changes. The 2 gauges would then both be sending a signal and counter acting each other.
Not sure I explained that clear, but the short answer is NO you can not do that, you need seperate sending units for each gauge.
Not sure I explained that clear, but the short answer is NO you can not do that, you need seperate sending units for each gauge.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Actually I don't believe you can do that. Since the electrical gauges work by sending voltage TO the sending unit and the unit grounds it through a resistor that changes as the reading changes. The 2 gauges would then both be sending a signal and counter acting each other.
Not sure I explained that clear, but the short answer is NO you can not do that, you need seperate sending units for each gauge.
Not sure I explained that clear, but the short answer is NO you can not do that, you need seperate sending units for each gauge.
Monsterbaby is correct. The second gauge will double the resisitance of the that the system sees at the guage end. Will read all wrong.
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