Head light switch makes gauges go crazzy yj - Pirate4x4.Com : 4x4 and Off-Road Forum

project_mud · 05-10-2012, 01:36 PM

1990 yj

My gauges go crazy when I turn on my head lights. Both my head light and dimmer switches have been taken apart and cleaned repacked with D grease.

I have been able to track it down to the middle contact in my head light switch that feed the dimmer switch. In the Manuel it labels as 72 18BL/RD. It goes to the dimmer switch as 90 18/pk/or and then turns into 52 180or/bk. I have traced it to the Gauge package circuit board connector. And cut it. The gauges still go crazy when I turn the head light on.

I then was wondering if power is back feeding from the dome circuit. I pulled the fuse. It reduces the amount of action on the gauges. But still screws them up.

I was going to try cutting the common ground 99 18BK? Wondering if power is back feeding in.

I have a feeling the issue has something to do with the dome circut. And my wipers dont work any more?

HAS ANYONE HAD A SIMMILAR PROBLEM? ANY SUGESTIONS?

Kole

mwstudt · 05-10-2012, 02:04 PM

I had it happen to me. I wired a KC Light toggle switch to it. Mine would go crazy when I would turn the dimmer to get the interior lights to come on. Now I turn the dimmer and flip the toggle, no more problems.

project_mud · 05-10-2012, 02:39 PM

what wires did you splice together?

mwstudt · 05-11-2012, 06:52 AM

I can look when I get home tonight. I figured it out by following one of the wires.

crashnzuk · 05-11-2012, 11:33 AM

I'd like to know the fix since mine does it as well. I found with mine that if you turn the rheostat all the way down so the gauge lights go out the gauges read normal (though you can't see them

).
Travis..

mwstudt · 05-11-2012, 12:50 PM

When I get home tonight I'll let you guys know.

92lilredyj · 05-11-2012, 02:40 PM

My dimmer makes my headlights go out when it gets hot... it sucks and scary when you are in town, or on a dark back road, going 50mph. I replaced the headlight/dimmer switch and it went away.

05-10-2012, 01:36 PM	#1 (permalink)
project_mud Registered User Join Date: Jun 2006 Member # 74368 Location: Allberta, Canada eh Posts: 322	Head light switch makes gauges go crazzy yj 1990 yj My gauges go crazy when I turn on my head lights. Both my head light and dimmer switches have been taken apart and cleaned repacked with D grease. I have been able to track it down to the middle contact in my head light switch that feed the dimmer switch. In the Manuel it labels as 72 18BL/RD. It goes to the dimmer switch as 90 18/pk/or and then turns into 52 180or/bk. I have traced it to the Gauge package circuit board connector. And cut it. The gauges still go crazy when I turn the head light on. I then was wondering if power is back feeding from the dome circuit. I pulled the fuse. It reduces the amount of action on the gauges. But still screws them up. I was going to try cutting the common ground 99 18BK? Wondering if power is back feeding in. I have a feeling the issue has something to do with the dome circut. And my wipers dont work any more? HAS ANYONE HAD A SIMMILAR PROBLEM? ANY SUGESTIONS? Kole __________________ 1990 yj RENAGADE 5.7 TBI, SM465 NP241C wJB SYE HP Dana60 front D60 Rear w5.38 locked and loaded 39.5 IROKS on 17 bling bling Last edited by project_mud; 05-10-2012 at 01:37 PM.

05-10-2012, 02:39 PM	#3 (permalink)
project_mud Registered User Join Date: Jun 2006 Member # 74368 Location: Allberta, Canada eh Posts: 322	what wires did you splice together? __________________ 1990 yj RENAGADE 5.7 TBI, SM465 NP241C wJB SYE HP Dana60 front D60 Rear w5.38 locked and loaded 39.5 IROKS on 17 bling bling

05-11-2012, 11:33 AM	#5 (permalink)
crashnzuk Registered User Join Date: Mar 2003 Member # 17632 Location: West Sacramento, CA Posts: 5,362	I'd like to know the fix since mine does it as well. I found with mine that if you turn the rheostat all the way down so the gauge lights go out the gauges read normal (though you can't see them ). Travis.. __________________ 74 Ramcharger, 360, 4spd, 60/70 on 37s 91.5 Dodge 6BT 5 spd tow rig

05-11-2012, 02:40 PM	#7 (permalink)
92lilredyj Registered User Join Date: May 2007 Member # 91803 Location: Beaumont, Tx Posts: 70	My dimmer makes my headlights go out when it gets hot... it sucks and scary when you are in town, or on a dark back road, going 50mph. I replaced the headlight/dimmer switch and it went away. __________________ '92 YJ, 4inch springs, 36's H1 recentered, d30/8.8 4.10's locked. much much more.

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05-10-2012, 02:04 PM	#2 (permalink)
mwstudt Banned Join Date: May 2011 Member # 189895 Location: Pacific, Missouri Posts: 835	I had it happen to me. I wired a KC Light toggle switch to it. Mine would go crazy when I would turn the dimmer to get the interior lights to come on. Now I turn the dimmer and flip the toggle, no more problems.

05-11-2012, 06:52 AM	#4 (permalink)
mwstudt Banned Join Date: May 2011 Member # 189895 Location: Pacific, Missouri Posts: 835	I can look when I get home tonight. I figured it out by following one of the wires.

05-11-2012, 12:50 PM	#6 (permalink)
mwstudt Banned Join Date: May 2011 Member # 189895 Location: Pacific, Missouri Posts: 835	When I get home tonight I'll let you guys know.