Your CRD is a totally different beast to the Di which seems to glow for an incredibly long time.
I have a later model crd and have tested the glow time. It seems to be directly related to engine temp. As soon as operating temp reaches approx 30⁰C it stops glowing. This means it doesnt even glow if starting when already warm. This is completely different to the Di which glows every start regardless of engine temp.
So I havent bothered with a timer because it simply doesnt need it.
Hope that helps
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