Author Topic: Disappearing headlights  (Read 6241 times)

Adam Hicklin

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Disappearing headlights
« on: April 11, 2013, 07:37:10 AM »
So, I plan on doing the dim headlight fix, but before I jump in to that, I have a more immediate problem.  Low beams work fine (but dim) but when I step no the high beam foot switch, headlights go out.  Bad foot switch or ????

Thanks in advance for your help.

Adam

Keith Moffett

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Re: Disappearing headlights
« Reply #1 on: April 11, 2013, 01:13:17 PM »
Always hated those switches in my older vehicles and now have one again in the MH.  
Years ago I would notice when the floor switch no longer felt like a clean clik on and off.  First time it feels sticky or like it isnt smooth I replace them and start looking at the headlight switch as well

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Steve Huber Co-Admin

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Re: Disappearing headlights
« Reply #2 on: April 11, 2013, 02:24:24 PM »
Sounds like a bad switch. You can check to see if you are getting a signal from it by measuring the voltage between TB1-5 and gnd in the electrical bay. TB1-5 should be the high beam signal from the switch. (There is schematic diagram in the written headlight instructions).
Steve
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Jeremy Parrett

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Re: Disappearing headlights
« Reply #3 on: April 11, 2013, 03:02:24 PM »
My Marquis does not have a headlight dim/high beam foot switch.  All Toronto  city buses I drove   had foot switches for the indicators/flashers as well as for the headlight dimmer.  It means you do not have to take your hands off the wheel to activate either system.  A very big safety feature.

Adam Hicklin

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Re: Disappearing headlights
« Reply #4 on: April 11, 2013, 10:42:27 PM »
Thanks Steve.  I'll check that.

Richard Cooper

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Re: Disappearing headlights
« Reply #5 on: April 12, 2013, 12:17:24 AM »
I have never driven my 2001 Marquis at night.  I don't know where the headlight dimmer switch is for my coach.  Sounds stupid I know.

Stan Simpson

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Re: Disappearing headlights
« Reply #6 on: April 12, 2013, 12:58:35 AM »
I don't mean to hijack this thread, but I have a question regarding 4-way flashers. I live on a semi-busy street, so when backing in to my parking pad, I like to have the 4-ways on. However, when I step on the brake, the 4-ways stop, and I only have brake lights. Is there a way to change that?

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Adam Hicklin

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Re: Disappearing headlights
« Reply #7 on: April 12, 2013, 07:06:11 AM »
Richard, on my 98 it's one of the old floor mounted foot switches, just to the left of the steering column.

Stan, I had that problem on a 1972 Chevy Pickup about 20 years ago.  If I remember correctly, it ended up fixing itself.  Not much help.  Sorry.