diff --git a/README.md b/README.md
index 2ead20f..682454a 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,5 @@ Part of https://github.com/andreika-git/hellen-one family
 https://docs.google.com/spreadsheets/d/1OiEaak7TElKwF-fXWvl9Dk-fD84a0NENe6lOwhXiOe4/
 
 Inspired by https://github.com/rusefi/hw_88_bmw
+
+We shall start from https://github.com/rusefi/hellen121vag but using https://github.com/rusefi/hw_88_bmw shape and pinout.