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Old 07-24-2010, 10:04 AM
Zen Zen is offline
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Trailer wiring problem

Hi,k have a 2000 f250 and I am getting power to the left hand trailer turn signal. No power to the right hand turn signal. I have traced it as far as the fuse block under the hood. Left hand gets 12 volts;. right hand gets .06 volts.

Any ideas on where the break might be or if there is a relay that controls this?

Thanks

Update - I am missing the two relays next to the PDB for battery charge and backup lights. What part or type of relay do I use there? Just the same as the other relays in the power distribution box?

Last edited by Zen; 07-24-2010 at 07:45 PM.
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Old 07-26-2010, 02:43 PM
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Bump

I have read that it might be the actual flasher relay. Where can I find a whiring diagram?

Thanks
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Old 07-28-2010, 03:10 PM
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or a wiring diagram
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Old 08-02-2010, 07:45 AM
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Anyone?

These crickets are getting anoying

All relays and fuses have been checked. It is either the relay or a wiring corrosion/short issue. Can anyone help out with a diagram.

Thanks
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Old 08-02-2010, 07:59 AM
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Turn your flashers on and see if it works then. If it does not then your flasher relay is most likely bad.
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Old 08-02-2010, 08:04 AM
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All flashers work except for the right rear on the trailer. No flasher and no break light. Running light only.

Where is the flasher located?
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Old 08-02-2010, 08:06 AM
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Have the under-hood fuses been looked at? I think each side is fused separately. My left trailer signal seems to not like U-haul trailers... keeps blowing that one fuse!
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Old 08-02-2010, 08:08 AM
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All fuses have been checked and are good.
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Old 08-02-2010, 08:15 AM
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Ok so your right side truck flasher is working. If that is the case then flasher relay is good.
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Old 08-02-2010, 08:21 AM
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Yep, everything works excpet the right side trailer.

the only reason I brought up the flasher relay is I saw a mention of it in a web search, but can't find it now.

I have 12 volts at the #1 fuse inside the cab for all lights.
12 volts at the #1 fuse under the hood
.06 volts for #3 flasher under the hood (right side)

Need help with which wires to trace and where they go to find where the bad connection or corrosion is I am guessing.
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