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Old 04 Apr 2007, 03:25 am
Sara
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Default Cruise control turns off when headlights turned on

My husband just added a trailer hitch to our 2007 Odyssey and did some
wiring to plug in the trailer lights when needed. Now the cruise
control cannot be set unless the headlights are turned off! I can see
that the cruise control is powered up. I turn off the headlights,
then cruise control works normally, turn on headlights, and speed
setting is cancelled. Guess I need to buy a manual with schematics,
but does anyone know if these things are related?

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Old 04 Apr 2007, 06:32 am
Seth
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Default Re: Cruise control turns off when headlights turned on

"Sara" <none@000.com> wrote in message
news:998060_c432ac1d8ef14183dceb184dbb2df18e@autob oardz.com...
> My husband just added a trailer hitch to our 2007 Odyssey and did some
> wiring to plug in the trailer lights when needed. Now the cruise
> control cannot be set unless the headlights are turned off! I can see
> that the cruise control is powered up. I turn off the headlights,
> then cruise control works normally, turn on headlights, and speed
> setting is cancelled. Guess I need to buy a manual with schematics,
> but does anyone know if these things are related?



Somewhere in the trailer harness he's getting "feedback" from the trailer
lights through the ground line for the brakes. With the headlights on, that
closing of the ground line is looking to the car like your foot is on the
brakes thus cancelling the cruise control.

I would first suspect he used an improper aftermarket trailer harness that
lacks the proper isolation.

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Old 04 Apr 2007, 09:26 am
motsco_
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Default Re: Cruise control turns off when headlights turned on

Sara wrote:
> My husband just added a trailer hitch to our 2007 Odyssey and did some
> wiring to plug in the trailer lights when needed. Now the cruise
> control cannot be set unless the headlights are turned off! I can see
> that the cruise control is powered up. I turn off the headlights,
> then cruise control works normally, turn on headlights, and speed
> setting is cancelled. Guess I need to buy a manual with schematics,
> but does anyone know if these things are related?
>

-----------------------------

I think Seth described it perfectly. He should have installed a module
that 'adapts' the Honda connector to work with whatever style of trailer
you use.

http://www.hondasuv.com/members/showthread.php?t=21073&
http://www.hondasuv.com/members/showthread.php?t=18685&

Look through these threads and follow any links provided. You can also
sign in and _SEARCH_. No need to ask, the answers are already there.

'Curly'
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