Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: Ratty on 16 September 2009, 18:03:57

Title: towbar wiring... again...
Post by: Ratty on 16 September 2009, 18:03:57
I've just been given a towbar for my estate, it has twin electrics, but no plugs on the vehicle end, anybody know where i can get plugs to fit the omega and in fact does the omega harness support twin towbar sockets?
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 19:07:38
Quote
I've just been given a towbar for my estate, it has twin electrics, but no plugs on the vehicle end, anybody know where i can get plugs to fit the omega and in fact does the omega harness support twin towbar sockets?

How does a bar 'with twin electrics' not have the sockets? The sockets & associated wiring ARE the twin electrics. You'll find a socket somewhere at the back of the car (never looked at an estate so don't know) where you'll find the connections for the black 12n socket. The grey 12S needs a permanent live for fridge - via a relay - and a 12 volt supply for the caravan (depending on age of the 'van it's either a permanent supply to temp supply your 'van with 12 volts or for the leisure battery charging)
The plugs & sockets can be bought at various places eg http://www.leisureshopdirect.com/caravan/electric/towing_plugs_and_sockets.aspx but there are loads!
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:10:26
it's the plugs that fit into the Miggy's harness I need, it has the trailer sockets (one black and one white)

Cheers for the link I'll have a browse :)
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 19:12:09
I thought we had a how-to-do on trailer/towbar wiring ...... ?  :-/  :-/  :-/
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 19:17:04
Quote
it's the plugs that fit into the Miggy's harness I need, it has the trailer sockets (one black and one white)

Cheers for the link I'll have a browse :)

I don't think you'll find those unless someone was rich enough to order a factory fit towbar, and even then you'll only get the 12N. Just use the socket wiring to get your connections from, but be aware that the brakes (black/yellow) at the socket won't suppply the brake light direct. It's wired from a trailer brake check control 'relay' which fits behind the glove box on face lift cars & above the driver's feet on PRE face lift cars, the 'relay' is/was about £16 If you seach hard enough on the forum, you'll find the part number - i posted it - but god knows where.  ::)  :y   :y
Title: Re: towbar wiring... again...
Post by: Welung666 on 16 September 2009, 19:17:39
IIRC the plugs for the tow bar sockets are on the left side in the spare wheel well.
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:17:50
Quote
I thought we had a how-to-do on trailer/towbar wiring ...... ?  :-/  :-/  :-/

there is i was looking at it a while ago, but I seem to remember that the Miggy estate had a dedicated connector behind/underneath the tailgate slam panel trim (if that's the correct term for it) and wanted to know where i could get the towbar side of that connector from.

sorry if i'm not making myself clear enough  :-[
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:24:09
Quote
Quote
it's the plugs that fit into the Miggy's harness I need, it has the trailer sockets (one black and one white)

Cheers for the link I'll have a browse :)


I don't think you'll find those unless someone was rich enough to order a factory fit towbar, and even then you'll only get the 12N. Just use the socket wiring to get your connections from, but be aware that the brakes (black/yellow) at the socket won't suppply the brake light direct. It's wired from a trailer brake check control 'relay' which fits behind the glove box on face lift cars & above the driver's feet on PRE face lift cars, the 'relay' is/was about £16 If you seach hard enough on the forum, you'll find the part number - i posted it - but god knows where.  ::)  :y   :y


Hmmm seems it might be easier to just wire it in normally, as per the how-to, just thought it might be easier to just plug it in to the existing socket as it were.
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:25:12
Quote
IIRC the plugs for the tow bar sockets are on the left side in the spare wheel well.

so do i have to remove the slam panel trim? or can i get to it by just taking out the spare wheel?
Title: Re: towbar wiring... again...
Post by: Welung666 on 16 September 2009, 19:26:07
Try a local breaker is about all I can suggest then :(
Title: Re: towbar wiring... again...
Post by: Welung666 on 16 September 2009, 19:26:57
Quote
Quote
IIRC the plugs for the tow bar sockets are on the left side in the spare wheel well.

so do i have to remove the slam panel trim? or can i get to it by just taking out the spare wheel?

Neither ;D just open the lid and they are tucked up the left hand rear corner.
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:28:14
DOH!!!  ;D ;D ;D
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 19:28:46
Found it 90463123  :y

http://www.omegaowners.com/forum/YaBB.pl?num=1175364013/0
I'm still sure we have the Omega loom/12N wiring colours somewhere ...  :-/
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:29:56
cheers Andy :) :y
Title: Re: towbar wiring... again...
Post by: Welung666 on 16 September 2009, 19:31:27
I've got to take the towbar off the gold 2.2 so I can do a colour to colour chart for the maintanence section :y
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 19:34:06
Quote
.......
Hmmm seems it might be easier to just wire it in normally, as per the how-to, just thought it might be easier to just plug it in to the existing socket as it were.

The wiring loom in the back of Loo-Knees' car is made up from various plugs that had the blue/black rear fog bridging wire in them. I already had an OE GM loom with an 8 terminal socket that allowed for switching off the car's rear fogs when you had a caravan plugged in so you don't get blinded from the reflection off the front of the 'van. You get blank looks when you ask at Vauxhall, but it must have been available at sometime.
Title: Re: towbar wiring... again...
Post by: Ratty on 16 September 2009, 19:38:02
And I thought it was gonna be just a case of bolt, connect and drive... I should have known better  ;D ;D
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 19:43:28
Quote
And I thought it was gonna be just a case of bolt, connect and drive... I should have known better  ;D ;D

Not quite!  ;) ;) ;)

One of these
Smartcom (http://cgi.ebay.co.uk/SELF-SWITCHING-SPLIT-CHARGE-RELAY-HEAVY-DUTY-30A-KIT_W0QQitemZ220480838670QQcmdZViewItemQQptZUK_Campervan_Caravan_Accessories?hash=item3355ae9c0e&_trksid=p3286.c0.m14) makes your fridge & charging wiring a piece of cake, otherwise you're dragging cables rearwards to the boot from your alternator to switch an ordinary relay.
Title: Re: towbar wiring... again...
Post by: Andy H on 16 September 2009, 20:04:00
I have been following this thread with interest because I will be needing to fit a towbar soon and I would like to do it the 'factory way' if I can.

If I have understood correctly I should find:
1. a prewired socket in the boot (with link plug in for the fog lamps)
2. a 4 pin indicator relay socket with a 3 pin indicator relay fitted
3. a lamp holder in the instrument cluster (wired to the 4 pin indicator relay socket) ready to take a 1.2w warning lamp
4. a socket for a trailer brake failure relay (that is capable of bringing uo a message on the MID).

Am I close? I am thinking that the only awkward items to source would be the trailer brake lamp failure relay and the plug for the prewired socket in the boot.
Title: Re: towbar wiring... again...
Post by: Kevin Wood on 16 September 2009, 21:00:28
The colour codes are on here.. and I was half way through turning them into a howto last week. Now, where did I put it? :-[

This might help in the meanwhile http://www.omegaowners.com/forum/YaBB.pl?num=1190477322/0

Kevin
Title: Re: towbar wiring... again...
Post by: Andy B on 16 September 2009, 21:08:04
Quote
I have been following this thread with interest because I will be needing to fit a towbar soon and I would like to do it the 'factory way' if I can.

If I have understood correctly I should find:
1. a prewired socket in the boot (with link plug in for the fog lamps)
2. a 4 pin indicator relay socket with a 3 pin indicator relay fitted
3. a lamp holder in the instrument cluster (wired to the 4 pin indicator relay socket) ready to take a 1.2w warning lamp
4. a socket for a trailer brake failure relay (that is capable of bringing uo a message on the MID).

Am I close? I am thinking that the only awkward items to source would be the trailer brake lamp failure relay and the plug for the prewired socket in the boot.

Yes! ;)
I wouldn't think about the GM loom/plug to plug into your (round) socket, just use the wires to link from - don't use Scotchlocks though  ;)  You'd need the 8 connector GM 12N socket to go with it - mine came from Dr O and was one knocking about the workshop from an Astra.
The trailer check control 'relay' part number is above.  :y  :y
Title: Re: towbar wiring... again...
Post by: Andy H on 16 September 2009, 21:14:20
Quote
Quote
I have been following this thread with interest because I will be needing to fit a towbar soon and I would like to do it the 'factory way' if I can.

If I have understood correctly I should find:
1. a prewired socket in the boot (with link plug in for the fog lamps)
2. a 4 pin indicator relay socket with a 3 pin indicator relay fitted
3. a lamp holder in the instrument cluster (wired to the 4 pin indicator relay socket) ready to take a 1.2w warning lamp
4. a socket for a trailer brake failure relay (that is capable of bringing uo a message on the MID).

Am I close? I am thinking that the only awkward items to source would be the trailer brake lamp failure relay and the plug for the prewired socket in the boot.

Yes! ;)
I wouldn't think about the GM loom/plug to plug into your (round) socket, just use the wires to link from - don't use Scotchlocks though  ;)  You'd need the 8 connector GM 12N socket to go with it - mine came from Dr O and was one knocking about the workshop from an Astra.
The trailer check control 'relay' part number is above.  :y  :y
90463123 excellent, thank you  :y
Title: Re: towbar wiring... again...
Post by: rustym95 on 27 September 2009, 01:41:54
I have a 230v 780wats ( Not 240v ) lead out for caravan on mine, it's located in the rear pas side wheel well, bloody good keep frige going and the clooks going as well in side, allso charges the bat in caravan.