Join Date: Mar 2010
Location: Adelaide, Australia
It drags the system voltage down to far less than 10 volts.
How old is your battery? I had a similar sounding issue and started hunting through starter issues but voltage at the starter shouldn't drop like that. Replaced the battery and all good. I was starting to wonder if I had fried my starter as I didn't install heat shield when I did the engine swap - now since rectified but thankfully not the cause of my woe.
'83 GTV6 - 164 12v 3.0 in!
'99 156 Twin spark - for track time fun! And ferrying the kids around in...