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Old 10-04-2016, 08:06 AM   #1
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1978 31' Sovereign
1968 24' Tradewind
Salem , Oregon
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Where is the 12v fuse block?

Hey guys,
I'm trying to figure out why my trailer brakes aren't working on my 68 Tradewind. Does anyone know where the 12v fuse block is at the end of the 7-way wiring harness?

Thanks
-johnny
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Old 10-04-2016, 10:28 AM   #2
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brooksville , Florida
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Are you getting power from your brake controller to your plug?

Also check your connection from the trailer side of the cord.
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Old 10-04-2016, 10:50 AM   #3
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Brakes should not be fused in the trailer. They are fused in the TV.

Check for power at the receptacle of the TV while someone applies the manual brake controller handle. If you have power there look at the end of the umbilical as it goes into the trailer. You should see the brake line brake off there and check for power there.
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Old 10-04-2016, 07:39 PM   #4
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1978 31' Sovereign
1968 24' Tradewind
Salem , Oregon
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Quote:
Originally Posted by Silverflames View Post
Are you getting power from your brake controller to your plug?

Also check your connection from the trailer side of the cord.

Yes, I tried my truck out on a different trailer and they work.

On the trailer side I've tried both blue and yellow in the appropriate position and we don't get brakes.

Thank you
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Old 10-04-2016, 07:41 PM   #5
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1978 31' Sovereign
1968 24' Tradewind
Salem , Oregon
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Quote:
Originally Posted by HowieE View Post
Brakes should not be fused in the trailer. They are fused in the TV.

Check for power at the receptacle of the TV while someone applies the manual brake controller handle. If you have power there look at the end of the umbilical as it goes into the trailer. You should see the brake line brake off there and check for power there.

Ok, thanks. I'll find the spot where they separate from the umbilical cord.
Thank you.
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Old 10-05-2016, 11:44 AM   #6
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1969 25' Tradewind
Lamar , Colorado
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Quote:
Originally Posted by HowieE View Post
Brakes should not be fused in the trailer. They are fused in the TV.

Check for power at the receptacle of the TV while someone applies the manual brake controller handle. If you have power there look at the end of the umbilical as it goes into the trailer. You should see the brake line brake off there and check for power there.
There is a 12volt fuse in the front where the radio is when it blows you loose all 12volt
Lights and there are more fuses in the rear compartment where the battery is if you haven't already. We have a 69 tradewind and I had similar problem and it was the fuse in
The front by the radio. Bill
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Old 10-05-2016, 01:24 PM   #7
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1967 26' Overlander
Spartanburg , South Carolina
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HowieE is right, there should be no fuse in the trailer brake circuit unless a PO added one for some reason. Sounds like a bad connection or broken wire. Only a trace from the trailer connector back will find it. Have you tried pulling the safety switch to see if the trailer battery will apply the brakes?
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Old 10-06-2016, 05:20 AM   #8
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1978 31' Sovereign
1968 24' Tradewind
Salem , Oregon
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Quote:
Originally Posted by Jacob D View Post
Have you tried pulling the safety switch to see if the trailer battery will apply the brakes?
Do you mean the breakaway cable? Mine doesn't have one, I'll have to get it installed. Would missing this be part of the problem?

Thanks you guys
-Johnny
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Old 10-06-2016, 06:28 AM   #9
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1968 22' Safari
Dorchester , Illinois
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On my 68 Safari the 12v fuse bar is below the sink above the 120v panel. Stand on your head to see it!
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