Jughead Posted December 14, 2020 Share #1 Posted December 14, 2020 (edited) Help!! I replaced the coil and ballast resister in my 1972 240Z, and suspect I may have the wiring wrong. (ugh) 1) Can anyone verify my understanding of the wiring in my coil/condenser/ballast resister area? Please see my schematic below and let me know if it looks correct. If not, what do I have wrong? 2) Where does the wire from the coil condenser connect to? 3) There are 2 Black & White wires (1 to the coil; 1 to the resister). How do I verify which is which? Thank You! Jughead Edited December 14, 2020 by Jughead typo Link to comment Share on other sites More sharing options...
SteveJ Posted December 14, 2020 Share #2 Posted December 14, 2020 Your wiring diagram looks correct. Of course, you can look at the factory wiring diagram by downloading the FSM from this site. The condenser goes to the positive of the coil. Make sure the B/W wires are not touching anything (wrap with electrical tape). Put the key in ON. Use a voltmeter (or test light) to measure voltage to ground (I like the strut tower nuts for ground.) on the B/W wires. The one with voltage goes to the ballast resistor. Link to comment Share on other sites More sharing options...
Jughead Posted December 14, 2020 Author Share #3 Posted December 14, 2020 Thanks Steve. I have the FSM. I couldn't find the Condenser in the diagram(!). I think I had the condenser going to the negative side! Would that cause the spark to be lighter than expected? (The coil's new). Link to comment Share on other sites More sharing options...
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