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Old 01-08-2019, 06:50 PM   #1
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Unhappy No Headlights!

Hi. Just bought a 1984 Chevrolet Blue Bird a couple weeks ago and the headlights will not come on. When I pull the switch part way the park lights come on but when I pull the rest of the way the headlights don't come on. I have checked fuses and they seem to be OK.

Any advice will be greatly appreciated!!
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Old 01-08-2019, 07:05 PM   #2
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Sounds like just a funky switch to me (?).
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Old 01-08-2019, 07:11 PM   #3
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Thanks, i was thinking the same thing becuase when i pull the switch all the way there is no power at the head lights. All other lights are working, we are new at this so any information is greatly appreciated.
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Old 01-08-2019, 07:51 PM   #4
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Sometimes on a dark night you can go out an fiddle with the headlight switch in the full on position and if you see the headlights flicker or try to come on, then you nailed the diagnosis.
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Old 01-08-2019, 08:03 PM   #5
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I had my headlights go dark on a mountain road late one night. Sudden darkness on a windy mountain road....

To resolve the issue I had to replace the headlight dimmer switch and my boxer shorts......
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Old 01-08-2019, 08:15 PM   #6
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Quote:
Originally Posted by BigDaddy1 View Post
Hi. Just bought a 1984 Chevrolet Blue Bird a couple weeks ago and the headlights will not come on. When I pull the switch part way the park lights come on but when I pull the rest of the way the headlights don't come on. I have checked fuses and they seem to be OK.

Any advice will be greatly appreciated!!

So, is bus gas or diesel? Front engine? Do you have a multimeter or test light?
Just because they work off the same switch is deceiving. The headlights have a separate power source than the parks, inst panel etc.

Thus separate fuses but the headlights have a built in circuit breaker in that part of the switch. I have that wire on my sticks and staples coming off the pos starter terminal all the way up to the headlight switch. It's an 85 GMC gasser so is probably similar to your setup.
Check wiring at headlight sockets and the associated ground wires. Likely rusted up bad.


Good luck and welcome too by the way,


John
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Old 01-08-2019, 08:39 PM   #7
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Thanks for all the input guys. I will be getting the new switch and dimmer switch tomorrow and try that. Will update as soon as I am able. Hopefully this will fix the issue.
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Old 01-14-2019, 12:08 PM   #8
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Quote:
Originally Posted by PNW_Steve View Post
I had my headlights go dark on a mountain road late one night. Sudden darkness on a windy mountain road....

To resolve the issue I had to replace the headlight dimmer switch and my boxer shorts......
That happened on my ford a few years ago.
I was on I-40 at 9pm in NM. and went to turn high beams at 65MPH and the lights went out. QUITE SCARY Hit switch again and low beam came back on.
Parked in the next town for night I could buy new switch.
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Old 01-14-2019, 01:17 PM   #9
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Originally Posted by Mekanic View Post
That happened on my ford a few years ago.
I was on I-40 at 9pm in NM. and went to turn high beams at 65MPH and the lights went out. QUITE SCARY Hit switch again and low beam came back on.
Parked in the next town for night I could buy new switch.
When I lost mine, we did the last 13 miles with my wife shining a flashlight out of the window......
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Old 01-14-2019, 01:47 PM   #10
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many years ago I was driving fast ( too fast ) and an approaching car wouldn't dim his(?) headlights - at that time the dimmer switches were on the floor - I stepped on the dimmer switch, but it stuck, so I stomped on it hard trying to get it to click - I didn't realise that the floor had rusted around the dimmer switch in my old car - my heavy footed stomp pushed the dimmer switch right through the floor and my lights went out - I went from glaring bright headlights shining in my eyes, to total darkness in an instant and I could see nothing on the unlit highway - by the time I was able to stop, I wound up on a one lane driveway headed to a local farm - the road I was traveling on had a sharp right angled turn that came up when I was blinded -if the driveway hadn't been there in 1957, it's unlikely I'd still be here in 2019 - lol
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