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dsisemore1

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Posted: 09/06/21 10:06am Link  |  Quote  |  Print  |  Notify Moderator

I have a 2016 Tiffin 36LA on Ford F-53 chassis. My running/tail lights on the passenger side are not working. Brake lights and turn signals work fine. Everything on the drivers side works fine. I have changed the bulbs - didn’t help. Checked fuse on the Ford distribution box - that fuse okay. I am thinking Tiffin installed these lights so might have a separate fuse somewhere? Any suggestions would be appreciated.

* This post was edited 09/06/21 10:35am by dsisemore1 *

enblethen

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Posted: 09/06/21 11:12am Link  |  Quote  |  Print  |  Notify Moderator

Yes, installed by Tiffin.
Ford has two fuse blocks. One under dash and other under hood/doghouse.
Does the rig have lamp outage function?
Splice under hood/doghouse?


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dougrainer

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Posted: 09/06/21 01:57pm Link  |  Quote  |  Print  |  Notify Moderator

There are 2 fuse boxes for Ford. The one outside by the engine oil fill and the one inside by the emergency brake pedal on the firewall. There is a fuse for each light. The sockets are part of the Ford wire assbly. The wire harness's GOING TO all 4 outside corner lights are FORD harness also. This is where a voltmeter or 12 volt test light comes in handy. Instead of just replacing a bulb, you make sure you have power AND ground to the bulb socket. Doug

dsisemore1

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Posted: 09/06/21 04:46pm Link  |  Quote  |  Print  |  Notify Moderator

Okay found the fuses inside the coach. Checked each bulb socket and all have current. Only saw one fuse for daytime lights. Fuse okay

enblethen

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Posted: 09/06/21 05:59pm Link  |  Quote  |  Print  |  Notify Moderator

You are not looking for daytime lights. You need to look in owner's manual or this manual 64-75
Many are wired into the trailer tow fuses. Test all the fuses with test lamp is the easiest.

dsisemore1

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Posted: 09/06/21 06:11pm Link  |  Quote  |  Print  |  Notify Moderator

Checked all fuses inside and out. Turned on lights has voltage but passengers side tail lights still not coming on.

* This post was edited 09/06/21 07:02pm by dsisemore1 *

opnspaces

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Posted: 09/06/21 09:51pm Link  |  Quote  |  Print  |  Notify Moderator

dsisemore1 wrote:

Okay found the fuses inside the coach. Checked each bulb socket and all have current. Only saw one fuse for daytime lights. Fuse okay


If all sockets have current then you have a bad ground. Can you easily pull the light fixtures off and see what's behind them?


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dougrainer

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Posted: 09/07/21 07:53am Link  |  Quote  |  Print  |  Notify Moderator

opnspaces wrote:

dsisemore1 wrote:

Okay found the fuses inside the coach. Checked each bulb socket and all have current. Only saw one fuse for daytime lights. Fuse okay


If all sockets have current then you have a bad ground. Can you easily pull the light fixtures off and see what's behind them?


Bingo. SWAP the Drivers side BULB to the INOP Pass side socket. IF it does NOT work but the Turn and Brake do, then the socket is bad(ground connection in the socket is bad) and you have to replace the socket. I believe you can get replacement sockets in the "help" section of auto parts stores like Auto Zone. Doug

PS if the Brake and turn signal work, then the ground TO THE SOCKET assbly is there, just not to the Running light pin in the socket.

dsisemore1

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Posted: 09/07/21 02:09pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all the help. Will work on again tomorrow and let you know how it works out. 1,500 miles from home and supposed to be on vacation .

* This post was edited 09/07/21 09:07pm by dsisemore1 *

enblethen

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Posted: 09/07/21 02:58pm Link  |  Quote  |  Print  |  Notify Moderator

Where are you?

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