ICT A6 Bill Validator — 110V AC 9-Pin Pulse Install
ICT A6 Bill Validator — 110V AC 9-Pin Pulse Install
Use this guide when your ICT A6 is the AC-line / S.T.D. Pulse version and you need the 9-pin mating connector pinout for install or ArcadePay credit-pulse tap.
Naming note: ICT installation manual labels this model 117VAC (0.2 A, 60 Hz). In the field you will also see 110V / 115V / 120V. Same pinout family — match the label on your validator and use a proper AC power harness.
When to use 110V AC (this guide)
- Validator is the AC pulse model.
- Harness path is WEL-M008 (validator 30-pin → 9-pin) into WEL-M010 and/or WEL-M012 (117VAC power harnesses per ICT manual).
When to use 12V DC instead
- Unit is 12V DC pulse → see ICT A6 12V DC pulse install (WEL-M007 → CU-961-1).
⚠️ Safety: Power the machine and validator OFF before you connect or disconnect any harness.
⚠️ Earth ground must be inside the machine on AC units (ICT caution).
⚠️ Never put line voltage on ArcadePay pulse wires. Credit path is dry-contact / low-voltage signal only.
ICT A6 bill validator? Pick 12V DC or 110V AC.
What harness parts you need
| Part | Role |
|---|---|
| WEL-M008 | Dual-in-line 30-pin on the validator side → 9-pin mating connector |
| WEL-M010 / WEL-M012 | 117VAC power harness options that mate to that 9-pin (ICT manual lists both) |
Connect the 30-pin to the side of the A6. Mate the 9-pin to the AC power harness. Confirm earth ground is bonded inside the cabinet.
9-pin mating connector (WEL-M008 → WEL-M010 / WEL-M012)
Mating face view with the lock tab on top. Pins read left→right, top→bottom as 1–2–3 / 4–5–6 / 7–8–9.
Labeled 9-pin mating face — 110V AC pulse (manual: 117VAC)
| Pin | Signal | Notes |
|---|---|---|
| 1 | NEUTRAL INHIBIT | Inhibit on neutral side |
| 2 | NEUTRAL ENABLE | Enable on neutral side |
| 3 | HOT ENABLE | Enable on hot side |
| 4 | 110VAC HOT (Power) | Line hot (manual: 117VAC HOT) |
| 5 | Earth Ground | Must be inside the machine |
| 6 | 110VAC NEUTRAL (Power) | Line neutral (manual: 117VAC NEUTRAL) |
| 7 | CREDIT RELAY (N.O.) | Dry contact — normally open |
| 8 | CREDIT RELAY (Common) | Dry contact — common |
| 9 | Reserved | Do not use |
Manufacturer reference page (same pinout; ICT wording uses 117VAC):
ICT A6 manual — S.T.D. Pulse for 117V AC (WEL-M008 → WEL-M010 / WEL-M012)
Validator-side 30-pin (dual-in-line) summary — AC pulse
| Pin | Signal |
|---|---|
| 1 | CREDIT_RELAY (Common) |
| 3 | NEUTRAL ENABLE |
| 4 | 117VAC NEUTRAL (Power) |
| 5 | NEUTRAL INHIBIT |
| 6 | KEY |
| 16 | CREDIT_RELAY (N.O.) |
| 18 | HOT ENABLE |
| 19 | KEY |
| 20 | 117VAC HOT (Power) |
| 21 | EARTH GROUND |
| Other listed pins | Reserved |
Credit pulse — how it works with ArcadePay
Same idea as the 12V unit: pins 7 (N.O.) and 8 (Common) are a dry relay. Bill stacked → brief closure → host pulse.
High-level path: validator credit relay → machine pulse line → ArcadePay tap
Practical install
- Keep AC power on pins 4 / 6 and earth on pin 5 via the ICT AC harness only.
- Tap credit relay 7/8 onto the machine existing coin/pulse input path.
- Feed that low-voltage pulse into ArcadePay (Easy Connect or hardwire → Pulse 1). ArcadePay-side wiring: ArcadePay Controller installation overview.
- Confirm in the ArcadePay dashboard that Pulse 1 fires for both a test bill and a cashless purchase.
Hard rule: ArcadePay pulse inputs are not an AC power splice. If you are unsure which wires are line voltage vs credit contacts, stop and meter with power off / follow the table above.
Inhibit / Enable (brief)
On the AC 9-pin:
- Neutral Inhibit / Neutral Enable / Hot Enable implement host inhibit and enable across the AC interface.
- Leave these on machine logic unless you are deliberately disabling acceptance.
- For ArcadePay you normally only need a clean credit pulse tap plus correct power + earth.
DIP / pulse mode reminder
Configure pulse / S.T.D. Pulse with the manufacturer DIP / option-switch sheet for your A6 revision.
- Do not use an invented switch table from memory — revisions differ; the ICT appendix is authoritative.
- After changes: power-cycle, confirm ready LEDs, test one bill, then one ArcadePay play.
Troubleshooting (short list)
| Symptom | Check |
|---|---|
| No power / dead unit | Pins 4 (HOT) and 6 (NEUTRAL); breaker / outlet; harness seating |
| Shock hazard / chassis hot | Pin 5 Earth bonded inside the cabinet — fix before anything else |
| Accepts bill, no machine credit | Pins 7 / 8 relay during stack; pulse path to game board |
| ArcadePay no credit | Pulse tap on the signal pair only; Pulse 1 settings in dashboard; verify a cash bill pulse first |
| Validator will not enable | Inhibit/Enable wiring; bill box seated; ICT LED flash codes |
| Intermittent AC unit | Reseat WEL-M008 / power harness; inspect for heat damage on HOT/NEUTRAL pins |
Source manuals
- ICT A6 / V6 Installation Guide (Vol. 7.0): ict a6 manual.pdf
- Section 6-2 S.T.D. Pulse for 117V AC (WEL-M008 → WEL-M010 / WEL-M012)
- Explicit caution: Earth Ground must be inside the machine
- Distributor PDF mirror (when available): a6v6.pdf
Companion: ICT A6 12V DC pulse install