diff --git a/Variant-PWM.md b/Variant-PWM.md
index 7c54c2a..6225851 100644
--- a/Variant-PWM.md
+++ b/Variant-PWM.md
@@ -3,6 +3,7 @@ This variant can be used with Pulse Width Modulation RC Receivers.
 
 ## Wiring:
 * Connect channel 1 of your receiver to blue wire and channel 2 to green wire on right sensor cable(shorter)
+* PWM is highly prone to noise : keep cables short, use 100nf capacitors, use shielded cable, use ferrites, stabilize voltage
 
 ⚠ Red wire from sensor cable delivers 15v !!!
 Use 3.3v from programming port, 5v from hall sensor cable, or a voltage regulator.
@@ -15,5 +16,4 @@ Proceed with [calibration](https://github.com/EmanuelFeru/hoverboard-firmware-ha
 
 ## Troubleshooting:
 If the board is [beeping](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/wiki/Diagnostics)
-* Make sure you are using the sensor cable(left or right) selected in config.h
-* PWM is highly prone to noise, keep cables short, use shielded cable, use ferrites, stabilize voltage
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+* Make sure you are using the sensor cable(left or right) selected in config.h
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