diff --git a/firmware/controllers/lua/examples/ford-focus-ii-pps.txt b/firmware/controllers/lua/examples/ford-focus-ii-pps.txt
index 170d56891b..82f0dd6b3f 100644
--- a/firmware/controllers/lua/examples/ford-focus-ii-pps.txt
+++ b/firmware/controllers/lua/examples/ford-focus-ii-pps.txt
@@ -1,4 +1,7 @@
 
+-- https://sourceforge.net/p/ecu/wiki/canbus/
+-- todo: CAN ID 430h, period 50ms, produced by SJB. Byte 7: Bit2 A/C request (button pressed).
+
 canRxAdd(0x201)
 setTickRate(20)