Good Evening,
I am at the point of the first start after head off round 2 of Timeserts to Bigserts. It's been a couple months since I had the car started. I put a charger on and when I went to crank it over, all I got was some loudish clicks and headlight flashes. Is this an anti-theft reaction? I disconnected the battery and put the charger on the battery without any terminals attached. Suggestions?
I thought I had all the electrical connections properly reconnected. I didn't disconnect any starter wires or alternator wires. I did disconnect the big hot wire at the + box to get the intake off. I have a couple DME codes and a vanos code that should go away once I build oil pressure.

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2001 x5 3.0 (sold with broken motor), 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed,