How do you spark verhicle without ecu?

To spark a vehicle without an ECU, you can bypass the ignition system by directly supplying voltage to the ignition coil. This involves connecting a 12V power source to the positive terminal of the coil and grounding the negative terminal, allowing it to generate a spark. Additionally, you can manually open and close the points in a traditional distributor setup to create the necessary spark timing. However, this method should be approached with caution, as it can be dangerous and may cause damage if not done correctly.