As your test run was short lived, disconnect the hot feed wire from the input to the ampmeter and tape it off against shorting out..jumper your voltage to the coil for ignition and then use a remote start switch clipped into the starter circuit..start the car..if there is no immediate smoke..then it may be electrical..
If you have smoke yet..try now to determine the odor....it may appear white..but could be a slight blueish tint...then once the odor has determined the source..you have but to trace it back...as long as you have enough oil in the crankcase and water to prevent overheat..you should be ok running the engine finding the cource of the smoke.