question re part for an autohelm 3000

[Connemara]

G' day all.

I have a pair of Autohelm 3000s, which unfortunately both have the same problem: The power cable cord connector locknut is missing.

That means there nothing holding the cord connector*(see attached image) to the control head.

(Well, can't seem to get the image to upload.)

I think the cord connector is PG7, but that's a guess. Does anyone know for sure what it is?

I've been trying to find locknuts here in Toronto with no success, at least partly because I'm not sure what I'm dealing with.

I'd also be interested to know the name and type of the plug that attaches the motor to the control head.

Connemara

[Connemara]

Trying again to add the image

[RocketScott]

Measure the threads

https://www.ring-plug-thread-gages.c...read-data.html

Grainger probably has what you need:

https://www.grainger.ca/en/product/C...tics=optional#

[Connemara]

Yeah, the Grainger piece looks right; I saw it the other day. But they are a fair way away, so I'm dithering on driving out there. Measuring is easier said than done; best i can do is a tape measure, probably not accurate enough. But I can give it a try. I also have to replace a couple of other bits and bobs, so maybe it's worth it ju
st to see what they have.

Thanks

Connemara.

[RocketScott]

They're cheap enough you could just order a few in different sizes

Or you could measure the cord diameter and replace the whole connector. Those are $3-4. I think they sell the lock rings separately
https://www.grainger.ca/en/product/C...CPG/p/WWG2DPF7

Third option, I checked my parts bin and have a bunch of pg7 and pg9 lock rings. PM me your address and I can mail you two of each

[Connemara]

RS: First, that is a very generous offer, but I won't put you to the trouble,. Instead I will get off my lazy ass and drive the 25 klicks to the Grainger outlet.
Second, I'm impressed you have a a parts bin that actually has stuff you recognize. I have several mason jars full of metal and plastic oddments, most of which fit devices and mechanisms that have long since gone the way of all flesh.

But a related question to my first: The Autohelm 3000 motor attaches to the control head with a two-pronged plug, the male part on the box and the female part on the cord. The two are pushed together and then there's a black plastic jobbie that is meant to screw on and keep the pieces together. Any idea what that device is called?

Rather poor image follows, but I think you can just see the plastic ring. I ask this because it took me about three days of Googling to find out that the cord connector is called a cord connector.

https://www.cruisersforum.com/forums...1&d=1636579166

[RocketScott]

It helps that the rings have 'PG7' and 'PG9' cast into them. They're all mixed in a drawer of the parts organizer with the rest of the cable seals and glands

That power connector I don't know for sure, could be switchcraft. Might still be available, or could be something that Raymarine ordered from a now defunct company. Because of the age your best bet would be to replace both sides so you know they are meant to play together and making good contact

https://www.mouser.com/c/?marcom=183108899

While you're at Grainger pick up a steel ruler:
https://www.grainger.com/product/WESTCOTT-Ruler-10F263
That will help identify what you've got