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IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: [MembersPage/PhatBob] How many connections do the wires have? Can you get hold of the wiring schematic for the installation that has these coils as this makes working out the connection a hell of a lot easier. I guess this is what you mean: [http://photobucket.com/albums/a97/crushcars/Turbo%20project/?action=view¤t=M52_electrical.jpg wiring] [http://photobucket.com/albums/a97/crushcars/Turbo%20project/?action=view¤t=COP1.jpg coil_1] [http://photobucket.com/albums/a97/crushcars/Turbo%20project/?action=view¤t=COP2.jpg coil_2] [http://photobucket.com/albums/a97/crushcars/Turbo%20project/?action=view¤t=COP3.jpg coil_3] Resistance measured: primary coil: 0.7 Ohm; secondary: 7 kOhm. There are 3 connections on each COP. Weight ? COP "specification" : [http://photobucket.com/albums/a97/crushcars/Turbo%20project/?action=view¤t=data_sheet.jpg Data sheet]. It looks like a standard transformer that can be driven with the ECM power stage (ignition IGBT). These '''look like very standard transformers that need 1 IGBT each to be driven'''. If they are good for inductive ignition app, GenBoard can drive them. '''Dwell and CDI / inductive compatibility''' - like compatible with either See DummyIgnition, DwellControlIgnition). '''Things that suggest it is good for inductive too''': * dwell (closing time?) 3.9msec * primary resistance 0.55 Ohm * power rail is fed from node30 (+12V, not GND5!) * primary induction: 4.3mH * weight: 324g '''COP "datasheet" text creates confusion''' The "activation=BIP142" line is very confusing. It might just be a recommendation to drive with. If there is a BIP142 inside, other lines (like the primary resistance=0.55 Ohm) becomes confusing. Also note that this "datasheet" contains no pinout. A proper datasheet with pinout and some voltage diagrams would clear it all up. I think it should be safe to start to drive it hard with IGBT, with 2.5msec dwell, (with max 1.5 mm secondary gap, of course, not open!) and see the result, increase dwell to 3msec and beyond if necessary. Got the [http://photobucket.com/albums/a97/crushcars/Turbo%20project/?action=view¤t=pinout.jpg pinout] diagram, but saddly no voltage diagramms available. '''Summary: "activation=BIP142"''' (from coil manufacturer quotation) means: '''its a description for tripple-Darlington, which is installed in this car'''. This '''also means that the coil works with inductive ignition too, not just CDI''' (good!). Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.