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Broken headlight dimmer switch

Tiny
MOMMA428
  • MEMBER
  • 1988 ISUZU TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
Can I bypass the headlight dimmer switch on the steering column and and replace it with a dimmer switch in the floor on my 88 Isuzu?
Wednesday, December 15th, 2010 AT 4:15 AM

9 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
It can be done if you have the wiring diagrams.
I do not know if the information is available in our database and I need more niformation on the truck model to find out.
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Friday, December 17th, 2010 AT 11:22 PM
Tiny
MOMMA428
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It is a 1988 Isuzu pickup it has a 2.3l engine, 5 speed manual tranny, 2wd, with a/c anything else? Thanks so much for all your help, I'm not able to drive at night much cause I bright light everyone and I can not afford a ticket. So I'll be waiting to hear from you.

Thanks Alot,
Shelly Johnson
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Saturday, December 18th, 2010 AT 3:47 AM
Tiny
KHLOW2008
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Can the taillights be turned on?
Can headlamps be turned on?
How would you like to wire the lighting switch?
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Saturday, December 18th, 2010 AT 12:13 PM
Tiny
MOMMA428
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  • 6 POSTS
Yes headlights and taillights can be turned on and they work fine- I just can not dim the bright lights(as the dimmer switch won't click)
I would like to put one of those floor dimmer switches in because a new one for my steering column costs 195.00 and my funds are not good at this time(laid off almost a year now) if you can help us with this you it would be so good. Awaiting your response.

Thanks,
Shelly
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Saturday, December 18th, 2010 AT 6:01 PM
Tiny
KHLOW2008
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  • 41,815 POSTS
Under present conditions, when headlights are turned on, the RED/BLACK wire is being grounded to turn the HIGH beam on.

You would need a 2 way switch to operate the system. Ensure the floor dimmer has 2 way functions.

At the headlight switch wireharness, cut off the RED/BLACK ( high beam) and RED/Yellow wire ( low beam). The RED/Yellow wire FROM switch is not going to be used so you need to insulate it properly and tape it back to the harness.

Floor dimmer switch should have 3 terminals for Low, Common and High respectively.

The RED/BLACK wire coming from the headlight switch would be the common ground for both circuits.

For LOW beam terminal at FLOOR DIMMER switch, attach RED/YEWLLOW wire going to fuse box.

For HIGH beam terminal at FLOOR DIMMER switch, attach the RED/BLACK wire going to fuse box.

Ensure the floor dimmer is located at an appropriate position before securing it.

You are set to go. Test if system operates correctly.
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-1
Sunday, December 19th, 2010 AT 4:03 AM
Tiny
MOMMA428
  • MEMBER
  • 6 POSTS
Thanks so much I'm going to try it-I'll contact you back if I need anymore infoTHANKS ALOT!
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Monday, December 20th, 2010 AT 6:40 PM
Tiny
KHLOW2008
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You're welcome.

Merry Christmas.
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Tuesday, December 21st, 2010 AT 12:43 PM
Tiny
MOMMA428
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Thank you so much I have lights that will bright and dim could not have done it without you! Your AWESOME! MERRY CHRISTMAS AND HAPPY 2011!
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Wednesday, December 22nd, 2010 AT 7:15 AM
Tiny
KHLOW2008
  • MECHANIC
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Glad to know you got it fixed.

Merry Christmas.
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Wednesday, December 22nd, 2010 AT 12:11 PM

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