OAP Pete
Ex Auto sparks [ now retired ] yes this is a M/frad condensor forget its value...not important as you have it. The live 12v from the loom goes to 1 wire of the unit...the other black wire goes to Coil live+, you may well have another wire on the coil +, this should be the branch off 12v for the Amplifier....ive a 3Door...cant remember Sapphire 4x4. The unit is earthed through its end bracket.
OAP Pete.