[aardvarcus]

I don't think the controller has any sort of intelligence to know the wires are up sized. If the 6.2 has the same setup as the 6.5 be careful as the stock glow plug wiring was fusible link, aka there aren't any fuses and the wire acted as a fuse. Thus upsizing to larger wiring would mean there isn't a fuse at all unless you add one. (This is separate from the controller, as I believe the small round controller is telling the relay when to turn on, the relay actually switches the power to the glow plugs on and off.)

If you have to replace glow plugs, look for the positive temperature coefficient ones where the resistance increases when they get really hot so they don't burn up as easily. I am building a "controller" which will be a push switch reliant on me to time which will control eight relays through eight fuses, using the PTC glow plugs should help protect me from frying anything if I hold it on too long.

I had to put a helicoil on the starter bolt on my old block, no bracket on the starter and bolt sheared. PO had broke off a hardened extractor up inside the bolt. Took a carbide drill bit and lots of patience to remove but dinged up the threads, then had to drill it bigger and helicoil it. Worked temporarily, luckily I am not using that block long term.