diff --git a/boards/V03.md b/boards/V03.md
index ed1bfbe..dec038a 100644
--- a/boards/V03.md
+++ b/boards/V03.md
@@ -2,7 +2,7 @@
 title: V0.3 Board
 description: Usage and details of the v0.3 series of boards
 published: true
-date: 2022-04-04T07:45:08.102Z
+date: 2022-04-04T07:54:13.341Z
 tags: 
 editor: markdown
 dateCreated: 2020-01-06T01:53:42.683Z
@@ -130,3 +130,43 @@ To make this simpler, the most common sensor types and their required configurat
 | V0.3.1  | Moved MAP sensor closer to edge of board. Beefier routing on the high current outputs (Including injectors) | [Download](https://github.com/speeduino/Hardware/blob/main/v0.3/Prior%20versions/v0.3.1/v0.3.1_bom.xlsx)       |
 | V0.3    | Initial release                                                                                             | [Download](https://github.com/speeduino/Hardware/blob/main/v0.3/Prior%20versions/v0.3.0/v0.3_bom.xlsx)         |
 
+## Full pin number chart
+
+Chart consist all pin numbers used in Speeduino Firmware for v0.3 boards. Pin numbers are Arduino Mega pin numbers. Not IDC pin numbers. This chart can be used as a guide when setting unused default outputs for some other use.
+
+| Pin name              | Pin number           | Description |
+|---------------------------|-----------------------|-----|
+| pinInjector1 |  8 | Output pin injector 1
+| pinInjector2 |  9 | Output pin injector 2
+| pinInjector3 |  10 | Output pin injector 3
+| pinInjector4 |  11 | Output pin injector 4
+| pinInjector5 |  12 | Output pin injector 5
+| pinCoil1 |  28 | Pin for coil 1
+| pinCoil2 |  24 | Pin for coil 2
+| pinCoil3 |  40 | Pin for coil 3
+| pinCoil4 |  36 | Pin for coil 4
+| pinCoil5 |  34 | Pin for coil 5 (PLACEHOLDER)
+| pinTrigger |  19 | The CAS pin
+| pinTrigger2 |  18 | The Cam Sensor pin
+| pinTrigger3 |  3 | The Cam sensor 2 pin (VVT2 input pin)
+| pinTPS |  A2 | TPS input pin
+| pinMAP |  A3 | MAP sensor pin
+| pinIAT |  A0 | IAT sensor pin
+| pinCLT |  A1 | CLS sensor pin
+| pinO2 |  A8 | O2 Sensor pin
+| pinBat |  A4 | Battery reference voltage pin
+| pinDisplayReset |  48 |  OLED reset pin
+| pinTachOut |  49 | Tacho output pin
+| pinIdle1 |  5 | Single wire idle control
+| pinIdle2 |  53 | 2 wire idle control
+| pinBoost |  7 | Boost control
+| pinVVT_1 |  6 | Default VVT output
+| pinVVT_2 |  48 | Default VVT2 output
+| pinFuelPump |  4 | Fuel pump output
+| pinStepperDir |  16 | Direction pin  for DRV8825 driver
+| pinStepperStep |  17 | Step pin for DRV8825 driver
+| pinStepperEnable |  26 | Enable pin for DRV8825
+| pinFan |  A13 | Pin for the fan output
+| pinLaunch |  51 | Can be overwritten below
+| pinFlex |  2 |  Flex sensor (Must be external interrupt enabled)
+| pinResetControl |  50 | Reset control output
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