Old Williams SA/SG 23-850 coils and their AE/AL replacements
The chart maps each older 23-850 DC coil to its later number: SA-23-850-DC to AE-23-800-01, SA1 to AL-23-800-01, SA2 to AE-23-800-05, SA3 to AE-23-800-04, SA7 to AE-23-800-02, SG to AE-23-800-06 and SG1 to AE-23-800-03. All of them read about 5.3 ohms; the AE/AL versions read about 4.2 ohms.
Systems
- Williams System 3
- Williams System 4
- Williams System 6 / 6A
- Williams System 7
- Williams System 9
- Williams System 11
- Williams System 11A
- Williams System 11B
- Williams System 11C
- WPC Alpha-Numeric
- WPC Dot Matrix
- WPC Fliptronics
- WPC DCS
- WPC-Security (WPC-S)
- WPC-95
Related tips
- Fitting a replacement coil on System 11
- Checking for power at a coil
- What a bad coil diode does
- Which way a coil diode goes
- Which way a coil diode goes
- Checking for power at a coil with the game on
- Coil-not-working checklist
- Grounding test for WPC coils 1-8
Source: Master Cross Reference Chart of Coils for Coin Operated Games (last edited July 25, 2016)