01-17-2020, 03:22 PM
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#1 (permalink)
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Master EcoModder
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Help With Wiring
I'm installing a pair of NiLight 18W LED spot lights on my 2010 Prius, which has fog lights. I want to disconnect the fog lights, and use those wires to run the spot lights. My spot lights have red and black wires. What color wire from the original fog light wires should I hook the red to, and what color wire from the original fog light wires should I hook the black to, so that I can turn them on with the original dash mounted fog light switch?
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01-17-2020, 06:12 PM
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#2 (permalink)
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Master EcoModder
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Normally red is going to be the 12 volt line(hot) and black will be ground. If you can't tell by just looking at the wires going to the fog lights which is hot, then either get a meter or a cheap automotive circuit tester to determine the hot line.
JJ
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01-17-2020, 07:14 PM
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#3 (permalink)
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Master EcoModder
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According to this, it will either work or it won't. 
Quote:
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Originally Posted by DDG
LED Polarity: Understanding and Troubleshooting - Birddog ...
https://www.birddogdistributing.com/...roubleshooting
Well one of the most common and easiest things to troubleshoot is making sure your LED's polarity is correct! That's right, unlike incandescent lighting the polarity of an LED matters- so if it is reversed it will not light up. Don't worry, it's an easy fix, just reverse your connections and voila! Why You Need to Know LED Polarity |
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01-17-2020, 07:18 PM
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#4 (permalink)
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Master EcoModder
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Thanks. I just found my old battery tester. I guess the colors on the LED are the same as the colors on battery cables, red for negative.
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01-17-2020, 08:42 PM
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#5 (permalink)
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You mean black? Every car I've owned, domestic or foreign, the positive battery cable is red.
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01-17-2020, 09:50 PM
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#6 (permalink)
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Corporate imperialist
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Some times body lights use pulsed DC and LEDs don't like it.
The pulsed DC let's the computer know when a light has burned out.
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01-18-2020, 02:27 AM
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#7 (permalink)
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Master EcoModder
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Quote:
Originally Posted by Vman455
You mean black? Every car I've owned, domestic or foreign, the positive battery cable is red.
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Thank you. I thought Black was ground. Good thing I talked to you. |
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01-18-2020, 10:36 AM
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#8 (permalink)
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Quote:
Originally Posted by oil pan 4
Some times body lights use pulsed DC and LEDs don't like it.
The pulsed DC let's the computer know when a light has burned out.
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Fortunately, the 3rd-gen Prius doesn't. OP should be okay swapping the lights. |
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01-18-2020, 12:10 PM
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#9 (permalink)
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Master EcoModder
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Thanks to everyone. 
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The Following User Says Thank You to Angel And The Wolf For This Useful Post:
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