It might be your terminology, but the positive spade(s) of the coil primary circuit will get the white, 12v feed wire from the ignition switch and the wire going out to the electric fuel pump to energize that (or the carb solenoid in your case).
The negative spade of the coil primary circuit will go out to the points (and thereby the condensor).
The high-tension (secondary circuit) lead will be the fat wire going from the center of the coil to the center of the distributor cap.
There are no fuses at all in the primary circuit (or secondary circuit, for that matter) to the coil. It is fed directly from the ignition switch to the coil. The engineers had great confidence that the Rover electrical systems were the finest in the world and opted not to needlessly protect too many of the circuits.
Are you sure the phenolic and/or plastic insulating washers are in the correct place so that the primary circuit isn't shorting out to ground in the area of the points? I wouldn't think that'd be a problem, since the points are nothing more than a ground for the circuit anyway, but you never know.
--Mark
1973 SIII 109 RHD 2.5NA Diesel
0-54mph in just under 11.5 minutes
(9.7 minutes now that she's a 3-door).