So this diagnostic plug on the Houston parts page says it isn't necessary.
https://store.delorean.com/p-6859-diagnostic-plug.aspx
Mine has been in my car and might work, or it might not. Never had the means to test it and don't really care to.
I'd like to remove it entirely and the reason for that is the pain in the butt factor of trying to get that plug bracket AND the dipstick tube bracket (on an automatic) AND the ground wire for the diagnostic plug all screwed into the engine block with the same bolt while not being able to see what you are doing and having to reach around to the back of the engine. Yea, suck it I say to that plug.
So for now it is almost removed, but the connection that goes down to some spot hard to see, I'm not sure if unplugging it is going to cause some stir (kinda like not having a bulb in the battery warning light will fubar your alternator charging).
Is there any harm in removing it entirely? And for that connection, can I just pull straight out on it to remove it? It is the one that plugs into this pickup support: https://store.delorean.com/p-6861-pick-up-support.aspx but it isn't clear to me if that little clamp and screw tightening contraption has to be loosened first?