diff --git a/CAN.md b/CAN.md
index 543b5686..aa8d039f 100644
--- a/CAN.md
+++ b/CAN.md
@@ -2,7 +2,7 @@ Overview of CAN usage and IDs used by rusEFI
 
 * rusEFI WBO two way communication
 * rusEFI WBO bootloader
-* rusEFI gauge broadcast
+* rusEFI gauge broadcast see https://github.com/rusefi/rusefi/tree/master/firmware/controllers/can
 * rusEFI vehicle specific communication 
 * rusEFI ECU bootloader OpenBLT
 * rusEFI CAN GPIO