300TDI conversion question - glow plug dash light

Here is the question: I am finishing up converting a 1998 D1 from V8 auto to 300TDI with 5 speed.

I am down to the little odds and ends in finishing it up. I am using a factory 300TDI engine harness which came with the glow plug timer / relay and harness. It is working well but I cannot find a light / wire from the instrument cluster to sub as the glow plug indicator.

On the 300TDI wiring diagram it shows a purple orange wire going the glow plug indicator light but I cant find that color wire in my V8 harness. I have located the correct black yellow wire in the 300TDI engine harness.

I remember someone mentioning using one of the indicator lights on the dash for this purpose but forgot what they said and who it was.

Anyone know?

Thanks in advance.

So, here is what I did. I found the CEL indicator wire which is Red with a Gray stripe. It is a perfect candidate as the orange CEL has no purpose without the V8 ECU. If you ground it the indicator light comes on. I connected it to the black with yellow stripe wire coming from the the glow plug relay. I then connected the black trigger wire powered when the ignition is turned on, the same source as the injection pump. (I do not understand why LR chose black for a power lead.)

I did not get the results I wanted. The glow plug relay activates and sends power to the glow plugs but doesnt cause the CEL light to come on.

If I am correct when the relay sends power to the glow plugs it also causes the wire to the dash indicator light to go to ground, resulting in the light going on. Can anyone confirm that? Also, the relay either stays on until I disconnect power or clicks on for just 2 or 3 seconds and goes off. Regardless of whether it stays on (too long) or clicks off quickly the CEL light does not illuminate.

It seems to me the relay is not grounding the dash light and when it energizes the glow plugs it either gets stuck on or cycles too short.

Do you think I have a bad relay or something else is going on?

German, unrelated to this topic, but could you take a photo the mounts to the gearbox / transfer case. I purchased my 300TDI kit from Land Rover import and think something has been customized in what they sent to me. The new mounts I purchased are in no way close to usable with the steel mount bases. It currently has very worn out round “hockey puck” like mounts. One of which really doesnt fit. The new mounts I ordered are quite different.

German, many thanks for the advise and photos!

I need one of those crossmembers.

Got the glow plug system working right today with the CEL light on the dash. Thanks for the help!