lights do not dim when I turn the key. What could be my problem or where should I start??

1997 CHEVROLET TRUCK
165,000 MILES • V8 • 4WD • AUTOMATIC
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FDCALLAHAN
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  • 2 POSTS
The battery seems fine, everything works, all the lights work. However I noticed that the lights do not dim when I turn the key. What could be my problem or where should I start?

Ok so I've Changed the starter relays, ignition fuses look good and my starter tested good. There is no security system and Yes my truck is in Park!

How do I test for a wiring fault with power supply and starter circuit? or should I just change the Ignition switch?
Nov 14, 2010 at 1:43 PM
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HMAC300
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  • 48,601 POSTS
first you have to charge the battery and have it load tested. But, there is a 40 amp fuse int heunderhood electrical center. Also before you start changing switches check them first. you do have a neutral safety switch which the starter goes through as well. you can check the yellow wire with a test light to see if the ignition switch is working then the purple wire to see if it's going through the switch that would check the ignition switch and neutral switch. if everything there is ok it then goes to the relay which that could be a bad connection there , like the cable may have slipped out.
Jun 28, 2021 at 9:55 AM
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REDNECKMECHANIC
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  • 5 POSTS
it could be the neutral safety switch on the transmission.
Jun 28, 2021 at 9:55 AM
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