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couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Carling Mom-off-Mom DP wiring diagram..?

Does anyone have an internal wiring diagram for the above switch. The pin-out supplied with the switch doesn't make sense, so would like to see how it's wired inside.

I was hoping to use it to switch +ve and earth for an in-cab winch control function.

Cheers

Simon

8th Feb 2014 11:22pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

These will help they're off the Devin 4X4 site....single and double pole momentary switch pinouts contained therein....the earth is usually only used as the internal light return, not as a switched return.

http://www.devon4x4.com/index.php?option=c...;Itemid=36 If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

9th Feb 2014 8:20am

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Thanks. I have that pin out diagram and that's what confuses me. On the DP switch it describes the pins as "Power In, Power Out and Earth" per pole.

I'll just run my multi meter across the pins and find out what it's doing. Will post back the results in case it's useful for others.

Cheers

Simon

9th Feb 2014 8:39am

VeeTee

Member Since: 06 Mar 2011
Location: Somewhere
Posts: 1512

Hi Simon, does this help?

Cheers, Vincent
1959 Polynorm 1/4 Ton Trailer, Olive Drab Green (sold)
1970 M416 Military Trailer (Camping Trailer Conversion), Epsom Green (sold)
1975 Series III 88 V6, Light Green (sadly sold)
1996 Defender 110 CSW 300 Tdi, Epsom Green (sold)
2000 Freelander 1 TD4 3-drs, Silver (sold)
2006 Freelander 1 TD4 5-drs Facelift Automatic, Tonga Green (sold)

MySite

9th Feb 2014 9:11am

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Thanks Vincent, that's more like what I was expecting..!

Just off to the garage to check this out..

Cheers

Simon

9th Feb 2014 9:15am

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Vincent,

Done the wiring and all is well ( with the in-cab winch control). Thanks...

I've got another slight problem. I've used two Carling on/off switches - one on the dash, the other in the rear, to switch a rear work light. It's a 2-way arrangement so I can switch the light on/off from the front or rear of the car. But the lights in the switches to show they are on do not correspond to whether the work light is on or not. I'd rather not have to put a separate warning light in, but can't figure out how to use the in-switch lights to show if the work light is on or not.

Anyway, lunch break now, so will scratch my head a bit more for an answer..!

Cheers

Simon

9th Feb 2014 1:51pm

VeeTee

Member Since: 06 Mar 2011
Location: Somewhere
Posts: 1512

That is a well known brain teaser, but there is a solution but it requires a relay to control one of the indicator lamps.

(the diagram says 230V but off course it can be used for 12V also). Cheers, Vincent
1959 Polynorm 1/4 Ton Trailer, Olive Drab Green (sold)
1970 M416 Military Trailer (Camping Trailer Conversion), Epsom Green (sold)
1975 Series III 88 V6, Light Green (sadly sold)
1996 Defender 110 CSW 300 Tdi, Epsom Green (sold)
2000 Freelander 1 TD4 3-drs, Silver (sold)
2006 Freelander 1 TD4 5-drs Facelift Automatic, Tonga Green (sold)

MySite

9th Feb 2014 2:43pm

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

The problem with my set-up is that the light is integral with the Carling switch, so have no control over it, other than the position of the switch itself. Being a 2-way arrangement, the switch can be in either position, depending on the state of the other switch.

I could just run a warning light from the work light, but that seems a bit clumsy.

cheers

simon

9th Feb 2014 7:00pm

VeeTee

Member Since: 06 Mar 2011
Location: Somewhere
Posts: 1512

Simon, I know - you'll have to modify the internal connections of the indicator in the switch. It can be done, I have seen this modification done by a fellow club member.
Don't think a plug & play solution exists...

Cheers, Cheers, Vincent
1959 Polynorm 1/4 Ton Trailer, Olive Drab Green (sold)
1970 M416 Military Trailer (Camping Trailer Conversion), Epsom Green (sold)
1975 Series III 88 V6, Light Green (sadly sold)
1996 Defender 110 CSW 300 Tdi, Epsom Green (sold)
2000 Freelander 1 TD4 3-drs, Silver (sold)
2006 Freelander 1 TD4 5-drs Facelift Automatic, Tonga Green (sold)

MySite

9th Feb 2014 7:43pm

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Ah, OK...I didn't know you can take the switches apart. I have a spare one, so will have a look.

Thanks for the idea.

cheers

simon

9th Feb 2014 7:45pm

VeeTee

Member Since: 06 Mar 2011
Location: Somewhere
Posts: 1512

You're welcome

Succes with the modification

9th Feb 2014 8:13pm

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

Deleted

9th Feb 2014 10:56pm

couplands

Member Since: 31 Aug 2011
Location: Peak District & Cornwall
Posts: 1826

VeeTee wrote:
That is a well known brain teaser, but there is a solution but it requires a relay to control one of the indicator lamps.

(the diagram says 230V but off course it can be used for 12V also).

Vincent,

I'm just trying to get my head around this circuit. In the top picture, wouldn't the relay coil form a closed circuit and also allow current to flow through the work light..?

cheers

simon

10th Feb 2014 1:30pm

mobilecentre

Member Since: 05 Mar 2012
Location: Evesham
Posts: 645

It depends on the type of switch as Carling offer many variations.

Some have a separate warning light as in two completely separate wires that need to be connected, others have the circuit connected internally so driven by switch position so when the output is live the warning light is illuminated.

10th Feb 2014 3:22pm

VeeTee

Member Since: 06 Mar 2011
Location: Somewhere
Posts: 1512

couplands wrote:

I'm just trying to get my head around this circuit. In the top picture, wouldn't the relay coil form a closed circuit and also allow current to flow through the work light..?

cheers

simon

Hmmm, you could be right there

I saw this on an electronics forum, so thought that would work. May be it depends on the resistance of the coil, indicator and work lamp, but now I have my doubts too

Guess more home work

Concerning the modified carling switches I am sure it can be done

10th Feb 2014 5:10pm

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