Wiring a replacement coil the right way round
Steps
- Make sure the new coil has a diode across its lugs (many come with one).
- Put the ground wire (usually the thinner single wire) on the lug with the non-banded end of the diode.
- Put the power wire(s) (usually two, daisy-chained) on the lug with the banded end.
- If unsure, copy the wiring of a neighbouring coil. Reversed wires act like a shorted diode and can destroy it and the driver.
Systems
Related tips
- Use the manual coil table and wiring diagrams to find a coil's transistors
- Checking for voltage at a coil
- Testing a coil diode
- Ordering the right coil
- What the coil diode does and how a bad one shows up
- Check every coil's resistance before first power-up
- Why a locked-on coil goes low resistance
- Which coil lug takes which wire
Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Two, Clay Harrell (pinrepair.com)