Small or large 7 pin? Advice pls

Submitted: Wednesday, Jan 17, 2007 at 10:55
ThreadID: 41297 Views:1702 Replies:9 FollowUps:11
This Thread has been Archived
Hi all
Looking for opinions on whether to fit the small or large round 7 pin plug for the new van.

One sparky says smaller one is better, pins are better design than larger one.

Another sparky says the bigger one has more surface area with the pins and puts up with the dust and corrosion better.

We will be travelling round oz for a few years.


Cheers
John
Back Expand Un-Read 0 Moderator

Reply By: Leroy - Wednesday, Jan 17, 2007 at 10:57

Wednesday, Jan 17, 2007 at 10:57
I tend to go large round 7pin because that's what everone has down here in Vic and then had an adapter for the few occasions that I use a trailer with the flat 7 pin.

Leroy
AnswerID: 215856

Reply By: japmel - Wednesday, Jan 17, 2007 at 11:06

Wednesday, Jan 17, 2007 at 11:06
I use the flat 7 pin plug myself because its not so bulky and is less likely to get damaged.

I've noticed more and more people are getting them.

Regards
japmel
AnswerID: 215857

Reply By: Member - Teabag (Queanbeyan) - Wednesday, Jan 17, 2007 at 11:23

Wednesday, Jan 17, 2007 at 11:23
Large 7 pin is better. If you intend on charging your battery in the caravan through the 7 pin plug instead of through an Anderson Plug, you can do so and use bigger cable thus minimising the Voltage drop over the cable. Horses for course otherwise....
AnswerID: 215863

Reply By: Member - andrew B (Kununurra) - Wednesday, Jan 17, 2007 at 12:02

Wednesday, Jan 17, 2007 at 12:02
Hi All

IMO there needs to be a national std for trailer plugs. All should be the same so any vehicle can tow any trailer!

Off the soapbox now

Cheers Andrew
AnswerID: 215865

Follow Up By: Member - Teabag (Queanbeyan) - Wednesday, Jan 17, 2007 at 12:14

Wednesday, Jan 17, 2007 at 12:14
Agree, though that would be tooooooo easy.......
0
FollowupID: 476162

Follow Up By: Leroy - Wednesday, Jan 17, 2007 at 12:24

Wednesday, Jan 17, 2007 at 12:24
and we shouldn't have different cars with differnet parts and engines and ....and...

Leroy
0
FollowupID: 476165

Follow Up By: Member - andrew B (Kununurra) - Wednesday, Jan 17, 2007 at 12:28

Wednesday, Jan 17, 2007 at 12:28
OH I wouldn't go that far Leroy, I just find it a pain when borrowing a mates trailer, or using my car and a mates boat on a trip etc, I would just prefer they were std on all trailers for ease of use.
0
FollowupID: 476167

Follow Up By: V8Diesel - Wednesday, Jan 17, 2007 at 12:37

Wednesday, Jan 17, 2007 at 12:37
I agree. All you foreigners use the wrong types.

In WA it's the small 7 pin round with a 50mm ball. Anything else is clearly ridiculous.
0
FollowupID: 476170

Follow Up By: Alan S (WA) - Wednesday, Jan 17, 2007 at 12:39

Wednesday, Jan 17, 2007 at 12:39
But dont forget the small 5 pin that is also used in WA.
0
FollowupID: 476172

Follow Up By: Member - Andrew W (SA) - Wednesday, Jan 17, 2007 at 12:56

Wednesday, Jan 17, 2007 at 12:56
Andrew,

If you guys in Kununurra can't get your act together and standardise how do you expect the rest of the continent to manage it?

And V8D - I'm with you on the 50mm ball - even selling 2 1/2 inch balls just promotes madness.

Cheers
Andrew.
0
FollowupID: 476177

Follow Up By: Member - andrew B (Kununurra) - Wednesday, Jan 17, 2007 at 13:04

Wednesday, Jan 17, 2007 at 13:04
Hey at one stage I had 4 trailers and 2 cars, 2 of the trailers were the same, as one of the cars, and the other car was the same as one of the other trailers. I had to buy lots of plugs (and a carton) to change them all. Last time I registered a trailer in NSW to pass a roadworthy it had to have a 7 pin plug, regardless of whether it needed it or had 5 core wire comeing out of it.
0
FollowupID: 476181

Follow Up By: V8Diesel - Wednesday, Jan 17, 2007 at 13:55

Wednesday, Jan 17, 2007 at 13:55
Alan, ahh yes the old 5 pin to go with even trickier 1 7/8" ball. They go on OK, but they come off OK too.

Traps for young players.
0
FollowupID: 476189

Follow Up By: Alan S (WA) - Wednesday, Jan 17, 2007 at 19:06

Wednesday, Jan 17, 2007 at 19:06
From memory if you used the 49mm ball instead of the 1 7/8" then you could not only use a 1 7/8" coupling but a 50mm coupling would also fit and not come off. You got a bit of slop but it would not seperate.

Worked okay with my garden trailers but wouldn't recommend it for anything heavy.

0
FollowupID: 476273

Follow Up By: Member - Glenn D (NSW) - Friday, Jan 19, 2007 at 00:04

Friday, Jan 19, 2007 at 00:04
Still having a bit of a laugh remembering my mates old man trying to put my 1 7 /8 " trailer coupling on a 50 mm ball.

LOL>

Glenn
0
FollowupID: 476621

Reply By: Member - MrBitchi (QLD) - Wednesday, Jan 17, 2007 at 12:38

Wednesday, Jan 17, 2007 at 12:38
Flat 7 pin for me. Gives me far less trouble than the round ones.
AnswerID: 215870

Reply By: srowlandson - Wednesday, Jan 17, 2007 at 12:43

Wednesday, Jan 17, 2007 at 12:43
all my cars with tow bars get a flat 7 and I have 3-4 convertor cables i have for flat 7 -> round 5 , round 7 etc.

The flat 7 seems to handle the mud and dust better and stays out of the way.
Steve
AnswerID: 215871

Reply By: Member - Pesty (SA) - Wednesday, Jan 17, 2007 at 14:13

Wednesday, Jan 17, 2007 at 14:13
Traditional South Aussie plug is a 7 pin large, well i wont be changing for a while, have 6 trailers and 5 vehicles, all 7 pin.

Cheers Pesty
AnswerID: 215892

Reply By: Member - Oldplodder (QLD) - Wednesday, Jan 17, 2007 at 17:52

Wednesday, Jan 17, 2007 at 17:52
Most people in Brisy see to use the small 7 pin round or the 7 pin flat.
Getting a 6mm trailer brake wire into the rear of the 7 pin small is a real pain. Largest wire they seem to take comfortably is 4mm.
AnswerID: 215951

Reply By: Member - Charlie M (SA) - Wednesday, Jan 17, 2007 at 18:41

Wednesday, Jan 17, 2007 at 18:41
Throw the cat among the pigeons
Go for flat 12 pin if used on a caravan give you 5 x 35amp plugs for charging ect. std 7 pin flat will still pug in. Just make a adaptor plug to go to 7 pin round
Cheers
Charlie
AnswerID: 215965

Follow Up By: Gronk - Thursday, Jan 18, 2007 at 13:54

Thursday, Jan 18, 2007 at 13:54
Yeh, it would be a good standard if it was a 12 pin flat on the vehicle. As said before, can take the most current of all the plugs, and the advantage of plugging in a "normal" 7 pin as found on most box trailers and a lot of caravans
0
FollowupID: 476474

Sponsored Links

Popular Products (13)