This question is for the w123 1979 240D.

Recently noticed the (dash) glow plug light would stay on after the engine started.

I would then shut off, restart. Glow plug light would go off.

Now it won't start, no glow plug light on.

Switched to an extra glow plug relay unit, but nothing changed.

In the process of switching this relay, the harness came apart and I'm not sure of the correct wiring when putting it back together.

There are various colored wires, and the harness has numbers for each hole.

Does anyone know where I can find a diagram to make sure the correct wires are back where they belong?

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