cold cathodes
Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=97545
Printed Date: July 16, 2025 at 7:16 AM
Topic: cold cathodes
Posted By: ice32
Subject: cold cathodes
Date Posted: September 30, 2007 at 7:10 AM
i just installed 4 blue cold cathodes into my car, and there only lighting up half the bar.
Can anyone let me no how to fix this or things to try?
Im gonna take a stab and guess its a power issue
Replies:
Posted By: focusedenergy
Date Posted: September 30, 2007 at 6:20 PM
Did you extend the wires from the transformer to the cathodes? That would be the reason if so- it is an ultra low alternating current and will not travel far. If not, make sure you're grounded properly and probably test the voltage from your hot wire.
Posted By: ice32
Date Posted: October 01, 2007 at 5:41 AM
i did extend the wires, is there anyway to get them working with extended wires?
Posted By: focusedenergy
Date Posted: October 01, 2007 at 8:16 AM
Not really. The current from the transformer to the cathodes is very small. The longer your wires, the less current you'll get to the cathodes. If you need them spaced farther apart, I would suggest getting another transformer (or kit). You can have your power leads about as long as you want from your 12v to the transformer.
Posted By: ice32
Date Posted: October 01, 2007 at 8:59 AM
ok, well thanks for the help and info, i'll just get 2 more inverters and rewire it.
cheers
Posted By: focusedenergy
Date Posted: October 01, 2007 at 1:15 PM
No problem. Happy lighting!
Posted By: ice32
Date Posted: October 01, 2007 at 7:18 PM
one last question, would a diode work on the negative side the same as it would the positive? or is there something equivalent that does the same job for negative sides?
thanks
Posted By: ice32
Date Posted: October 01, 2007 at 10:54 PM
Nvm, i tried and it worked
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