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Old 01-28-2014, 11:02 AM   #15
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Its not uncommon for an owner or trailer shop to decide, "Oh, I've got the wrong plug on the vehicle, I'll change it to the one the setup requires," instead of adding a plug or otherwise wiring in a flexible way.
I use a 7-to-4 pin adapter & diodes in the toad to preclude feedback into the toad wiring. I believe there are also 7-to-6 adapters.

That said, I'm guessing Foster's rig came w/7-pin and was wired to 6 pin, and now the converter module is fried. Modules are obtainable at NAPA, AutoZone, etc., and you may find one that has the exact same wiring for more or less plug & play. This is one area I'd spend the extra coupla bucks for heat-shrink-sealing connectors as it is a wet condition of use area.

You can diagnose the wiring into the module to see if the signal still exists there (I'm guessing yes as all your toad lights appear to be out, not just stop or turn, etc.). This is where a Power Probe 3 will do the job in about 3 minutes using the piercing probes; IIWMI'd seal the pierce holes on completion, or do the pierces where I'd do the cut/splice for the new module. You can do the same w/a decent test light & a good piercing probe for any circuits that light, but a ground circuit won't tell you much w/the trouble light and the PP3 will (it reads ground & has a low tone it sounds, high tone for batt voltage, and volt meter readout to get actual voltage so you can read volt drop).
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Old 01-28-2014, 03:13 PM   #16
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I could be wrong but think the module is to convert the separate amber turn signals on the Alpine to the combined stop/turn signal lights on most cars. Accordingly, your combined light config on the tow wont be compatible with the amber turm signal config on the Alpine without a working module. Before I ran out to the parts store to replace the module, I'd verify that I am getting signals on the wires coming to the module from the coach. Again, some owners used multiple relays to boost amps from the Vansco feeds. No worries--my feelings remain intact---good luck on your search for the "root cause".....

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2003 40' MDTS
Garden Ridge, Texas
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Old 01-28-2014, 05:02 PM   #17
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Thanks Old Scout and EM. I think you have both given me the advice necessary to fix my problem. But with my limited abilities and no PP3 we have decided to head home with DW driving the Jeep and have the shop I have repairs done at do it. I'll let everyone know how it turns out.


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