diff --git a/Hardware/Hellen/Hellen128.md b/Hardware/Hellen/Hellen128.md
index aa628960..dd671d0f 100644
--- a/Hardware/Hellen/Hellen128.md
+++ b/Hardware/Hellen/Hellen128.md
@@ -1,3 +1,5 @@
+[Schematics DRAFT](Hardware/Hellen/hellen128mercedes-a-schematic.pdf)
+
 [Hellen128 Interactive Pinout](https://rusefi.com/docs/pinouts/hellen/hellen128/)
 
 [Google Docs Pinout Spreadsheet](https://docs.google.com/spreadsheets/d/1I-lZKRajTiEGFUXdZpXEtKF2pymlOo-lPahy3cLMnl4)