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Date:         Wed, 8 Apr 2009 17:11:39 -0300
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Trailer Harness Wiring
Comments: To: Larry Himli <lhimli@AOL.COM>
In-Reply-To:  <49DCFB4D.000006.05928@LARRY-PC>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 03:30 PM 4/8/2009, Larry Himli wrote: >I don't have time to order a wiring harness for my 87 Westy. Going to haul >small trailer on this adventure. Any help with how and where to splice in a >4 wire connector. Thanks

You have to get (or build, if you're a die-hard -- it's just four biggish diodes) a harness with a convertor box that takes the separate feeds for brake and turn signal and sends them to the trailer combined; or else put separate turn signals on the trailer and use a 5-pole connector.

The harnesses are available at any U-Haul that does trailer stuff (maybe all of them), Advance Auto Parts, NAPA, probably most FLAPS, and any trailer-specific place. Cost under $20. It should come with 3M-type tap splices (actual 3M if you're lucky).

The feeds are accessible near the left tail light, just before where the harness splits to feed L and R taillights. It's a loose plastic sheathing; slit it carefully lengthwise in the middle, far enough to work with the wires. Verify correct wires with a pin and test-light or meter before you splice to them. If the harness tells you to ground to the chassis (hence not providing a splice for ground), the taillight grounds run to a bolt just beneath the ignition coil.

The schematics are on 97.112 ff, tracks 102 and 106 for the running lights; 121 through 127 for the brake and turn. The key is on 97.4-5 if you're not used to Bentley schematics.

-- David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/ '89 Po' White Star "Scamp"


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