rusefi_documentation/Mazda-Miata-1999.md

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# 1999 Mazda Miata
[64 pin Connector](OEM-connectors#64-pin)
[Mazda MX5 1.8 1999 AE](http://rusefi.com/forum/viewtopic.php?f=3&t=467)
[Mazda Miata NB1 Trigger](All-Supported-Triggers#mazda-miata-nb1)
set engine_type 9
## Plug 1
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22 pin
| pos | b pos | color | desc | type |
| --- | ------- | ------- | -------------------- | ----------- |
| 1A | W1 | blu/red | hot all times | Input +12v |
| 1B | W2 | wht/red | Main relay | Input +12v |
| 1C | W3 | | | |
| 1D | W4 | | | |
| 1E | W5\>W37 | | check engine light | output/low |
| 1F | W6 | | | |
| 1G | W7 | | | |
| 1H | W8 | | | |
| 1I | W9 | | A/C fan | |
| 1J | | | | |
| 1K | | | | |
| 1L | | | | |
| 1M | | | | |
| 1N | | | | |
| 1O | | | alternator field | output |
| 1P | | | A/C system | |
| 1Q | W17 | | low battery light | |
| 1R | W18\>Wx | | radiator cooling fan | output, low |
| 1S | W19 | | A/C system | |
| 1T | W20 | | | |
| 1U | W21 | | | |
| 1V | W22 | | Neutral switch | |
## Plug 2
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16 pins
| pos | b pos | color | desc | type |
| --- | ---------- | ----- | ------------------------- | ------------ |
| 2A | "W23" | | fuel tank pressure sensor | |
| 2B | "W24" | | IAT | analog input |
| 2C | "W25" | | | |
| 2D | "W26" | | Vehicle Speed Sensor | |
| 2E | W27\>W55 | | CLT | analog input |
| 2F | W28\>?? | | knock signal | |
| 2G | W29 | \* | \* | \* |
| 2H | W30\>"W26" | | cam sensor | |
| 2I | W31\>W49 | | sensor power | 5v outut |
| 2J | W32\>"W24" | | crank sensor | |
| 2K | W33 | | tach signal | |
| 2M | | | | |
| 2N | | | | |
| 2N | | | | |
| 2O | | | | |
| 2P | | | | |
## Plug 3
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26 pin
| pos | b pos | color | desc | type |
| --- | -------- | ----- | ------------- | ------------ |
| 3A | W39 | | | Ground |
| 3B | W40 | | | Ground |
| 3C | W41 | | | Ground |
| 3D | W42 | \* | \* | \* |
| 3E | W43\>W51 | | TPS | analog input |
| 3F | W44\>W40 | | sensor GND | Ground |
| 3G | W45\>W9 | | coil \#1 | |
| 3H | W46\>W6 | BRN | coil \#2 | |
| 3I | W47 | | clutch switch | |
| 3J | W48 | | | |
| 3K | W49 | | | fuel gauge |
| 3L | W50 | | | |
| 3M | W51 | org | IAC power | \+12 volts |
| 3N | W52\>W35 | | fuel pump | output/low |
| 3O | W53 | | IAC control | output/low |
| 3P | W54 | \* | \* | \* |
| 3Q | W55 | | VICS solenoid | output/low |
| 3R | | | | |
| 3S | | | | |
| 3T | | | | |
| 3U | | | | |
| 3V | | | | |
| 3W | | | Injector \#1 | output/low |
| 3X | | | Injector \#2 | output/low |
| 3Y | | | Injector \#3 | output/low |
| 3Z | | | Injector \#4 | output/low |
![Wiring Diagram](Images/Mazda_miata_1999.png)