Ignition switch

[Pint Pot]

Good evening all, I am a comlete duffer where electrics are concerned and need some help. The switch on my 7 diintegrated and the only replacement I could get is one without the charging options - before I remove the many wires from the original switch can somone please explain what they work. I have diagram in a Pitman`s book but while the terminals have various codes allocated to them it doesn`t explain what they actually do, any help greatly appreciated.

[Tiger]

Hello
Just search for Harry Hales for a excellent review of 7 electrics
Regards
Tim

[John Cornforth]

Here's a diagram I drew viewed from the FRONT.  Without the charging section of the switch available, you may wish to configure the Dynamo to Low charge only, i.e. the charge resistor is in circuit and not shorted out by the switch as per Side/Head/High charge mode. This can be done by leaving the two relevant wires unconnected with their ends taped up.


  PLC2 Switch 1.jpg (Size: 73.98 KB / Downloads: 161)
  PLC2 Switch 2.jpg (Size: 74 KB / Downloads: 162)

More information here: http://www.da7c.co.uk/technical_torque_a...4%20A4.pdf

[Pint Pot]

Thank you all very much, things are beginning to make sense to my poor befuddled mind now. I tried to look at a wiring diagram in the Ptman`s book but had the same problem as I do with maps, a kind of dyslexia whereby I can`t make out where the wires go. David Cochrane of A7 Spares also suggested coupling the "summer" charging wires together but I intend fitting the two circuits to switches so that I can go from one to the other should the need arise. Thanks again, I`m really grateful to all. Hazel

[Reckless Rat]

Just one caveat...if you were thinking of taking the switch apart then put it in a plastic bag first and keep your fingers crossed. Remember you heard it first on here.

[Tony Griffiths]

If all else fails, you can buy a 'reconditioned' unit. https://www.prewarcar.com/310427-mg-cars...-type-plc2  The picture might be slow to load.

[Tiger]

I am fairly sure I can find a new old stock PLC 2 if you’re interested