jsargent Posted April 18, 2007 Share Posted April 18, 2007 I currently have a 12V coil which I'm intending to replace with the standard 6V coil/ballast resistor combination. My problem is that the wires available under the bonnet don't correspond exactly to any of the wiring diagrams I can find. I have three white/orange wires (two seem to have power when cranking, one whenever the ignition is on,) one white/slate one and the purple one from the luminition unit. If anyone else has a similar combination of wires, please could you let me know which is supposed to connect to where?Cheers Link to comment Share on other sites More sharing options...
Richard B Posted April 18, 2007 Share Posted April 18, 2007 You don't need the one that has power (only) when cranking; it's a wire from the starter motor that is meant to bypass the Ballast Resistor. The purpose is to provide 12v to the coil when starting rather than 6v the engine normally has when running. Effectively it hot wires the coil and gives the ignition system a boost when the car is cold.A 12v coil gives a more powerful spark all the time. Link to comment Share on other sites More sharing options...
jsargent Posted April 18, 2007 Author Share Posted April 18, 2007 Not for the current setup no, but as I said I am fitting a new ballast coil, so I will need the switched feed Link to comment Share on other sites More sharing options...
Lord Sorbington Posted April 18, 2007 Share Posted April 18, 2007 The new coil I bought for my 2000 is marked up 12V ballast - I bought it at Stoneleigh and was assured it was fine for any car with a ballast resistor ignition system. Haven't fitted it yet though..... Link to comment Share on other sites More sharing options...
Richard B Posted April 18, 2007 Share Posted April 18, 2007 Sorry jsargent; me bad. I did not read your first post properly.The feed from the ignition switch goes to one side of the Ballast Resistor the other side has a wire that then goes to the coil.The wire from the starter goes to to the same side as the coil wire effectively bypassing the resistor when cranking.Better? Link to comment Share on other sites More sharing options...
jsargent Posted April 19, 2007 Author Share Posted April 19, 2007 I know the priciple - I just have too many wires (compared to all the wiring diagrams), so I can hazzard a guess on what to do with them all, but I was hoping someone else had a similarly excessive connector count already wired up to a ballast coil. Sorry if I didn't explain myself very clearly. Link to comment Share on other sites More sharing options...
Richard B Posted April 19, 2007 Share Posted April 19, 2007 Does the Lumintion system support a Ballast'ed Coil? If so you need an instruction manual for it or someone who already has one in use. Link to comment Share on other sites More sharing options...
jsargent Posted April 19, 2007 Author Share Posted April 19, 2007 Yes, that's fine. Installation of the luminition (-ve) side of the coil is fine - that can remain as is. I just have too many wires for the +ve side to know what to do with Link to comment Share on other sites More sharing options...
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