Went to start my 115 the other day and it would not start.

I opened the bonnet and noticed that the wires connecting the glow plugs were bright red like a toaster element.

Is this normal?

I don't think so....sounds like a plug failed to ground and its feeding the juice as a short to the engine block. (hence the glowing of the connecting wire).....I'd replace the glow plugs. And perhaps consider upgrading them to the later pencil type rather than the loop type.

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Thanks for that.