Dimming Headlights - Mazda MX-6 Forum
 
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post #1 of 6 (permalink) Old 6-19-16, 23:36 Thread Starter
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Dimming Headlights

I have searched all over for a solution to this problem and I can't find one. I have a 93 with a headlight problem. I've switched to the 2 light "ebay" projectors with (for now until I can figure out this problem) regular halogens. When I go to use the headlights they start out bright and no problems...both high and low. I'll drive for a bit then they get dim. Seems like half the brightness. It seems to happen whenever the engine fans came on so I figured it was a charging problem. I checked the voltage at the battery and it's fully charging...14v. I checked at the the lights and it's down just below 14...but above 13. With the car off and lights on battery and lights are at 12. I also thought it might be the blue box under the dash beside the cruise control module. I thought that because at one point all the lights went dim and I would employ the universal fix and knock that box and it would fix it. I think it was an accident that I did that but that universal fix doesn't work anymore and only the headlights are dimming. All the grounds are good. Not sure what else to "knock" next . Does anyone have an idea?
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post #2 of 6 (permalink) Old 6-20-16, 21:06

 
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sounds like the alternator is an issue.

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post #3 of 6 (permalink) Old 6-25-16, 12:42

 
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Quote:
Originally Posted by TwoPedalWarrior View Post
sounds like the alternator is an issue.
..Sounds reasonable to me. Check that and see how that reads..

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post #4 of 6 (permalink) Old 6-28-16, 17:32 Thread Starter
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Even thought the battery reads 14V when it's running and the lights are on? This may sound like a stupid question but is there another way to check the alternator?
Thanks
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post #5 of 6 (permalink) Old 6-29-16, 2:32

 
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check the plug connection into the headlight harness. make sure the connection is any and clean. I had an issue like this with the angel eye projectors. if the blue plug where the gaslight harness plugged inot the main hashes want seated right both lights would stay on at half the brightness. use some dialectic grease and you should be good to go.
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post #6 of 6 (permalink) Old 6-29-16, 2:32

 
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check the plug connection into the headlight harness. make sure the connection is any and clean. I had an issue like this with the angel eye projectors. if the blue plug where the gaslight harness plugged inot the main hashes want seated right both lights would stay on at half the brightness. use some dialectic grease and you should be good to go.
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