Greetings,
There is a chrome pull switch and indicator light right above the brake fluid-handbrake light on the left side of the dash. When I took the air conditioner apparatus out of the boot, there was a striped wire and connector, but the color of the wire is obscure. With the battery disconnected,

the wire is connected to ground. I have not found the switch or wire in the wiring diagrams I have. Information will be appreciated.

 

I have an S type of the same year with the heated rear screen.
There should be two wires in the boot under the rear screen. One to earth which will be black. On my car this is on the right side. The live wire which comes in from the left side is Black and White and comes direct from a fuse in the dash.
Not sure if the wiring is the same but no reason why not.

 

Thank you for your response, Cass3958. Indeed one wire is black and white and on the left. I haven't found the black one on the right, but I have not looked carefully. In your car, is the glass heated with internal wires, or is there an actual "heater"?

 

The rear screen is heated with very fine internal filaments that you can hardly see. There are two points on the screen glass at the bottom on each side where the internal filaments are connected to a slightly larger wire that hangs down from the glass and goes through the rubber seal then through holes in the body so the wires hang down into the boot behind the hinges. The connection between the slightly larger wire and the filaments is very fine and if it was pulled to hard it could easily be detached from the glass.

I don't have any photos of the rear screen showing the wiring and the filaments are too fine to come out in a photo but attached is a photo of the rear parcel shelf showing the holes that the wires from the screen go through to the boot.

 

Heated rear screen. Thicker, requires special rubber. Leads run through small grommets.

 

Thank you for the help. Perhaps I can sort it out from here... Regards, Morgan

 

A new heated rear screen (or NOS more to the point.)

One can vaguely see the filament across the central horizontal reflection that runs from top to bottom. Still in the UK at this time with P/N sticker & edge protection still in place. Now in my car in SA. DHL got it here in one piece. A friend drove all the way from Worcester to Norwich to fetch it for me.








Every harness in car new. (sorry things are still dusty here ~ everything needs a good clean ~ knobs on switches not yet replaced or aligned. Brake Fluid escutcheon replaced after this.)





All Gauges properly restored by us. Explained in my thread ~ see signature.

 

I did not know that! I have a heated screen that I bought some time ago as a spare. Clearly I also need a different rubber.
>.

 

Yes ~ They are thicker than the standard rear screen & have holes in them for the 2 wires. You just have to order the right one. People like Barratts know all about them.

 

Apparently, the rear glass in my car was replaced in 1992 when the restoration was done 2K miles ago. The sealing rubber appears to not be as massive as depicted in Glyn's drawing. There are no wires in the boot at the back seat except the black and white one that the wiring diagram shows. In the center of the rear window at the bottom, there is a label. At the top is Triplex Toughened. Next is a jagged line that looks like the symbol for resistance a 1) 90, next, a heart shape with a cross in it, under that A92. I did not pull up the rear deck trim to try to find the holes that show up in Cass3958's post. Tried several angles of lighting to try to see the wire in the glass, but no luck. I have a Lucas tool to take the switch out of the dash or come up from underneath to see what is going on there.

Now I have a fuel leak from the carbs demanding my attention until that problem is behind me

 

The filament wires in the glass are quite easy to see so I would assume that if the rear screen has been replaced a standard none demist screen has been put in. The electric demist screen is thicker so the standard rubber would not fit it but the standard screen would fit in the demist screen rubber. If you were putting a new demist screen in I would buy new rubbers anyway.

If you are not changing the rear screen rig up the rear demist switch as a choke switch which is in a way what I did. I bought a second demist switch and converted it to a choke switch instead. It sits above the demist switch and works a treat. The light even works when the choke is on.

 

I have one of those switches but it has a black pull button, not chrome. Came out of a '66 S type.

 

It's wrong for a 66 S Type. All compacts used chrome switches. It had probably been changed at some time. Early XJ6 might have used black.

 

The rear window switch on most of the Series 1 XJ6 was in the row of rockers at the bottom of the centre panel. Of course, very early cars could have been different. Another possibility is the Daimler DS420. It was always something of a bitsa with old 420G parts mixed with a few XJ.

 

Yes you are correct Peter for most Series 1 XJ6's. Your thoughts on the Daimler DS420 might well be right.