post #1 of Old 07-26-2013, 01:52 PM Thread Starter
Therios
Registered User
2003 TJ Wrangler 
 
Join Date: May 2013
Location: Portland
Posts: 135
Strange light wiring problem

So I have an LED light bar that is working great. I just installed another one of the same brand only much larger. I used the same wiring kit as well. As nearly as I can tell, everything is the same. But here is the weird part.

1) made "Y" connector for ignition switched hot to switches from scotch lock on blue/white I believe
2) ground on switch is good
3) switched power at switch goes to relay

Original light bar works flawlessly

New light bar will illuminate if and only if the switch is on and then you turn key to run
If you switch the new light bar off then it goes off and flipping the switch will never turn the bar on until you do the step above
Original light bar works flawlessly

In troubleshooting, I pulled the relay ground under the hood. With ignition in run, grounding the relay will illuminate he new light bar. Repeatedly it works. Attach the ground and try the switch again and it functions as above.

Switch? Wiring? I have traced it all out so many times I am crazy.

Any ideas other than replace switch and relay? Because they work with intermittent ground. Do I have something crossed maybe?


Therios Pendragon aka Ken Johnson
2003 maroon Jeep Wrangler SE - Soft top
Hard half doors
-New Bestop replacement
-Orfab front bumper (DONE)
-CRS rear bumper
-CRS rear bumper tire mount swing arm.
-led third light mods that sit in the two spare tire lug holes.
-because of above - removed ugly third light tower completely
-smitty top end grab handles
-20" LED light bar 10 degree spot (installed now and blindingly operational)
-50" LED light bar 20 degree flood ( changed to 30" in center 3 tabs, installed but not wired)
-windshield mount light bar (done)
-winch 8000# smitty
-Monstaliner complete pan in red head(as soon as they deliver it) (done)
-Carpet removed
-corbeau RS reclining seats
-corbeau water proof seat covers
-corbeau seat mount replacements (removes tilt forward passenger seat)
-AXD 430 receiver http://www.crutchfield.com/p_070AXD4...-Receiver.html
-hood hinge mount for my hi lift jack
-Headlight replacements
-tremendous mt 31.5/10.5 15s on nice alloy rims
-Everything else is stock... For now

-next items
Led dash replacements

Led square lights for 6 free mounting tabs
Led backup lights
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post #2 of Old 07-26-2013, 03:01 PM
Holder350
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1995 XJ Cherokee 
 
Join Date: Oct 2007
Location: Whitesburg
Posts: 5,293
Test for 12v from the switch at the relay, with key on, off, switch on, and switch off. Then you'll know where the issue is.

95' XJ Country - Stock Skids - D30/D35 Limited Slip - 3" Lift - 31x10.50R15 - 4.0 HO - AX15 - NP231

98' XJ Classic - D30/C8.25 - 4.5" RC Lift - 33x12.50R15 - 4.0 HO - AW4 - NP231
Quote:
Originally Posted by Azzy View Post
You can tell the character of a person in how they treat someone who can do nothing for them.
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post #3 of Old 07-26-2013, 03:36 PM Thread Starter
Therios
Registered User
2003 TJ Wrangler 
 
Join Date: May 2013
Location: Portland
Posts: 135
Quote:
Originally Posted by Holder350
Test for 12v from the switch at the relay, with key on, off, switch on, and switch off. Then you'll know where the issue is.
Had not got around to the meter yet. Why would it light at all if that was bad?

Therios Pendragon aka Ken Johnson
2003 maroon Jeep Wrangler SE - Soft top
Hard half doors
-New Bestop replacement
-Orfab front bumper (DONE)
-CRS rear bumper
-CRS rear bumper tire mount swing arm.
-led third light mods that sit in the two spare tire lug holes.
-because of above - removed ugly third light tower completely
-smitty top end grab handles
-20" LED light bar 10 degree spot (installed now and blindingly operational)
-50" LED light bar 20 degree flood ( changed to 30" in center 3 tabs, installed but not wired)
-windshield mount light bar (done)
-winch 8000# smitty
-Monstaliner complete pan in red head(as soon as they deliver it) (done)
-Carpet removed
-corbeau RS reclining seats
-corbeau water proof seat covers
-corbeau seat mount replacements (removes tilt forward passenger seat)
-AXD 430 receiver http://www.crutchfield.com/p_070AXD4...-Receiver.html
-hood hinge mount for my hi lift jack
-Headlight replacements
-tremendous mt 31.5/10.5 15s on nice alloy rims
-Everything else is stock... For now

-next items
Led dash replacements

Led square lights for 6 free mounting tabs
Led backup lights
Therios is offline  
post #4 of Old 07-26-2013, 04:20 PM
Holder350
Registered User
1995 XJ Cherokee 
 
Join Date: Oct 2007
Location: Whitesburg
Posts: 5,293
You are either getting a sporadic 12v signal to the relay from the switch or a sporadic 12v from your keyed source to the relay.

That's assuming the ground at the relay and light bar are both good.

95' XJ Country - Stock Skids - D30/D35 Limited Slip - 3" Lift - 31x10.50R15 - 4.0 HO - AX15 - NP231

98' XJ Classic - D30/C8.25 - 4.5" RC Lift - 33x12.50R15 - 4.0 HO - AW4 - NP231
Quote:
Originally Posted by Azzy View Post
You can tell the character of a person in how they treat someone who can do nothing for them.
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