Page 9-S11 that white tiger posted above, top of the page, in the box. If I am misunderstanding, please feel free to correct me.
My 7.3 IDI likes glow plugs that are 0.3-0.5 ohms, as far as I can tell my multimeter seems to be able to reliably read that. To be clear it doesn't "sit" at say 0.4...