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Old 01-24-2019, 10:18 AM   #1 (permalink)
Zeus of the Sluice
 
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Aftermarket gauges: is there an accepted color coding for wiring?

Title basically states it.

For aftermarket gauges like Autometer, is there an accepted color coding for the wiring? Or is it just what is in hand?

I'm looking at fuel gauge, oil pressure, water temp and trans temp.
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Old 01-27-2019, 09:42 AM   #2 (permalink)
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Quote:
Originally Posted by Lil'John View Post
Title basically states it.

For aftermarket gauges like Autometer, is there an accepted color coding for the wiring? Or is it just what is in hand?

I'm looking at fuel gauge, oil pressure, water temp and trans temp.
I keep the white and black for the lighting. Ignition red. Sending unit is whatever I have on hand. I make sure I label everything. I would be more concerned about the insulation being rated for the area you are installing and termination method, solder and heat on splices. All the gauges you have listed will require one sender wire. You will have to change the sender in the gas tank as auto meter does not match up with the jeep resistance sender values. I just built a custom auto meter cluster and pillar pod for my LS swap. Any questions let me know.
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Old 01-27-2019, 09:56 AM   #3 (permalink)
Zeus of the Sluice
 
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No problem with things labeled. I've got a Dymo with heat shrink rolls :


I'm doing a fresh rewire on a new project and I found that Autometer doesn't include any wiring aside from lighting.

On my previous project, the gauges(Haneline) I used included wiring so I matched their colors.

Not Jeep but GM fuel pump assembly from 2000+.
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Old 03-07-2019, 12:57 PM   #4 (permalink)
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usually it is...

red: ignition power
black: ground
orange or white: headlamp signal/power (turns on the gauge backlight when you turn headlights on)
green: gauge sender

I will usually use different colors for different gauge sender, i.e. blue wire for water temp, yellow for oil press, etc. that way you dont have a whole bunch of green wires that are hard to trace back to troubleshoot, if needed.

I usually splice the red and white together, that way i dont have to worry about splicing into a separate circuit for headlamp turn on signal.

some other more "sophisticated" gauges have a 3 wire sender that consist of black, purple, green, if i remember correctly. (my autometer fuel pressure sender is this way)

I dont think there is a "standard" that gauge manufacturers have to abide by, but in my experience, this is the "norm".
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