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Marker lights acting funny

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Old Jun 27, 2006 | 06:59 AM
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From: ALCONA ONTARIO
Marker lights acting funny

I noticed today that when I apply the brakes on my 92 shorty the marker lights on the front light up. I figure that there must be a bad bulb somewhere?? Anybody have this happen?
 
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Old Jun 27, 2006 | 11:26 PM
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It's more likely a bad ground on the wiring for the lighting. The current going through the brake lights will try to find any path it can if the normal ground connections are compromised. The filaments in the marker lights work adequately, and will light up in the process.
 
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Old Jun 28, 2006 | 11:09 AM
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From: ALCONA ONTARIO
Turned out to be the trailer wiring adapter, when I tested with my multimeter at the plug, all 4 pins were grounded. removed the adapter and problem resolved.
 
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