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willysmjeeps.com :: View topic - M100 trailer question
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M100 trailer question

 
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MASH_4077
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Joined: Mar 31, 2012
Posts: 22
Location: Fairmount, Indiana

PostPosted: Thu Apr 12, 2012 8:32 pm    Post subject: M100 trailer question Reply with quote

So tonight I was out in the shop tinkering with my Jeep & decided to hook up the M100 to it. Well I plugged in the lights & I've got no lights. No blackouts no tail lights no nothing. I do have an issue with the brake lights on the Jeep its self. But I think the is a whole other issue. But anyways. I'm thinking there is a wire possibly broken or my connections were just not good enough. Anyone have any ideas where to start? Thanks in advance!!
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wesk
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Joined: Apr 04, 2005
Posts: 16225
Location: Wisconsin

PostPosted: Fri Apr 13, 2012 1:18 am    Post subject: Reply with quote

Same place you start on any trailer lighting issue 12 or 24 volt. Using a test lamp or meter:

1-Check each output pin in the jeep's trailer receptacle for proper power.

2-Check all grounds.

3-Check all the trailer's lamps.

4-Check each lamp socket on the trailer for proper power.

(Proper power means system voltage is available when that light function is applied. IE 24 volt system then proper power at the receptacle's pin for the marker lights will be system voltage when the main light switch is in any position that normally applies power to the rear marker lamps.)
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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MASH_4077
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Joined: Mar 31, 2012
Posts: 22
Location: Fairmount, Indiana

PostPosted: Sat Apr 14, 2012 3:40 pm    Post subject: Reply with quote

Ok my A1 is still 24v and so is the trailer . Can you still use a regular meter with the 24v system? I want to make sure. I'm not that great with electrical stuff lol. Also I'm working on a brake light issue on the A1 not sure weather its the switch or bulb. Thank you for the insight on where yo start!
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MASH_4077
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Joined: Mar 31, 2012
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Location: Fairmount, Indiana

PostPosted: Sat Apr 14, 2012 8:25 pm    Post subject: Reply with quote

Figured it out. All of my bulbs are burnt out but 2 passenger side brake light & tail light work. And its a pain to get the lens covers off!! Lol
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wesk
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PostPosted: Sat Apr 14, 2012 11:45 pm    Post subject: Reply with quote

Wait to you see the price of the 24 volt bulbs! Wink
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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MASH_4077
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Location: Fairmount, Indiana

PostPosted: Sat Apr 14, 2012 11:47 pm    Post subject: Reply with quote

Lol I sense some sarcasm there Wes lol
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LeeMN
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Joined: May 06, 2012
Posts: 19
Location: Harris, Minnesota

PostPosted: Tue May 15, 2012 9:47 pm    Post subject: Reply with quote

Guys if you are near a caterpillar dealer you can buy 24V bulbs there cheaper than napa. Been a while but last time I purchased bulbs Cat was half the price of NAPA
HTH, Lee
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wesk
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Location: Wisconsin

PostPosted: Tue May 15, 2012 10:12 pm    Post subject: Reply with quote

Thanks Lee, I'll have to check out the Cat shop!
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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RickC
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Joined: Apr 11, 2005
Posts: 174
Location: Coventry, RI

PostPosted: Wed May 16, 2012 7:43 am    Post subject: Reply with quote

A lot of the dealers have NOS bulbs in 10 packs for about 15 bucks.....
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FrankenJeep
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Joined: Jan 07, 2007
Posts: 56

PostPosted: Tue May 22, 2012 3:38 pm    Post subject: Reply with quote

RickC wrote:
A lot of the dealers have NOS bulbs in 10 packs for about 15 bucks.....


Yep. I ran into that problem, too. Had to buy a whole BOX of 'em to fix 2 that were toast. Sad But I've got PLENTY of bulbs now................... Cool

FJ
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major519
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Joined: Dec 09, 2010
Posts: 90
Location: Nipissing Ontario

PostPosted: Wed May 23, 2012 6:13 am    Post subject: Reply with quote

I used to work at a trailer shop. Two of the most common causes for lighting failures on a trailer are the connection point, either the towing veh or the trailer (socket and plu) or the ground.
The ground is a biggie; realize that when towing a trailer, the hitch is what makes ground. If you have a ball type hitch and it is rusty, poor contact will be made. this is the same for the inside of the tongue. I believe on the pintle system you have a separate ground pin on the plug and socket.
Poor grounds anywhere in an electrical system are the cause of many headaches.
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C15TA
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Joined: Dec 25, 2008
Posts: 42
Location: Castleton Ontario Canada

PostPosted: Thu Jun 14, 2012 6:43 pm    Post subject: Reply with quote

Hi Chris
I don't quite agree about the ball type hitch making the ground. When I wire trailers at the garage I don't usually even hook the truck to the trailer. Extra time, different size etc. I depend on the ground wire from the vehicle and make sure that wire is cleanly attached to the trailer and the lights are grounded to the trailer. You are 100% right about the ground being one of the most important factors for light problems. Way, way back when I was an apprentice I had to wire my bosses buddies boat trailer. I was driving myself crazy trying to get lights until I realized the trailer was a tipper and the tongue wouldn't ground to the chassis where the rusty pivot was. A tough lesson. Embarassed
By the way Chris congratulations on your new CDN 101 trailer. It sounds like a keeper with that combat zone history.
Cheers,
Barry
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