Originally Posted by MrJim
The pigtail on the 1971 Airstream Safari we are buying has a 7 pin pigtail, and the 2005 Honda Pilot with which we plan to tow it has a 7 blade receptacle. Our dealer has offered to replace the pigtail, but I understand from messages here that it may be better to instead add an adapter and keep the 7 pin pigtail.
My question is, what such adapter works? The ones I see in catalogs for 7 pins don't look like they would take the scalloped edges between pins of the pigtail now installed.
See attached photo of the current Airstream connector:
I don't believe that I have seen the style of round-pin connector that is in your photo. The only 7-pin round to 7-blade adapters with which I am familiar utilize a round plug with a square/rectangular reference "bump" to mark the top of the plug. The photo below illustrates the adapter that I utilize as an "emergency" adapter to use in the event that my trailer must be towed by someone who doesn't have a round-pin connector on their tow vehicle.
The adapter is available from E-Trailer
as well as several other sources.
I made the switch from the blade-type connector to pin-type connectors over five years ago. Several long-time Airstreamers suggested that I consider making the change when they learned of my frustration with annual replacements of the blade-type connector on my tow vehicle and every-other-year replacements of the blade-type connectors on my trailers (due to corrosion). Since upgrading to the heavy-duty self-cleaning seven-pin connectors, I haven't had to make any replacements of either trailer or tow vehicle connectors. The one thing to keep in mind is that the Airstream 7-pin round connector is not wired to the industry standard for that device so it is necessary to rewire the trailer to match the pin-out for today's industry standard for the round-pin connector.
Good luck with your investigation!