Heated Rear Window

Hover over a wire to confirm the colour

Chrome Bumper to 1970

Note: North America used a separate switch and warning light, and white/black wires from fuse to switch and switch to screen, from 1968

Chrome bumper 1971 on and rubber bumper 1977 on

Note: Pull-switch with integral warning light used from 1973 in North America

Rubber Bumper GT to 1976

Adding a relay

Physical wiring

Hatch open, wire (in this case the earth wire on the left) exiting from the window seal rubber and going to a bullet connector above the rear header rail of the headlining. The 12v connection on the right-hand side is identical.

Hatch closed, just a small loop of wire visible

The soldered connection point on the surface-printed element, about mid-way down the side of the glass, in this case the left, hatch open on my 75 V8 ...

... and on Robert Kerr's car, glass removed. I'd say extreme care needs to be taken if you need to disconnect/reconnect the wire attached to this connector, say when replacing the glass, to avoid the risk of detaching the connector from the screen.