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Q: no dim on headlights but ha sbright on 1997 Infiniti QX4

My headlights has no dim but bright is working perfectly fine
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Check 15 amp fuses #59 and 60 in the fuse box both supply power to the headlight switch. The red and the red/yellow wire should both be live from the fuse at the light switch. Red/green and the red/black wire at the light switch must be live in the low beam position at the switch or the switch is bad. These colors follow out to the bulbs them selves see if these colors are live at the bulbs.
What Patrick is explaining is how to find out the problem. No, it's likely not the fuse. He's telling you how and where to check for power to the headlight switch, and then out to the bulbs. This is how a technician does it, performing circuit testing.

Often times, those of us on here answering a bunch of questions may provide more technical information than the end user is wanting, willing and able to comprehend. We apologize for that; however, we know there are a lot of do-it-yourselfers out there who might have a test light and might like to do a few things on their own. If you are not one of those folks, simply use the information we provide as knowledge that will help you when you take it the repair shop.
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