diff --git "a/AlphaX-4K\342\200\220GDI.md" "b/AlphaX-4K\342\200\220GDI.md"
index 5868f419..3aea8475 100644
--- "a/AlphaX-4K\342\200\220GDI.md"
+++ "b/AlphaX-4K\342\200\220GDI.md"
@@ -6,4 +6,6 @@ Standalone ECU for 4 cylinder GDI engines
 
 [Firmware Snapshot](https://rusefi.com/build_server/rusefi_bundle_alphax-4k-gdi.zip)
 
+[Schematics rev a](Hardware/Hellen/alphax-4K-GDI-a-schematic.pdf)
+
 [Kia PB adapter](https://rusefi.com/docs/pinouts/Hyundai-Kia-PB-platform-adapter/) see also [Hyundai-PB](https://github.com/rusefi/rusefi/wiki/Hellen-Hyundai-PB)
diff --git a/uaefi121.md b/uaefi121.md
index 3d9e0a0d..56c69009 100644
--- a/uaefi121.md
+++ b/uaefi121.md
@@ -7,3 +7,5 @@ Nicer sibling of https://github.com/rusefi/rusefi/wiki/uaefi
 * metal enclosure
 
 https://rusefi.com/docs/pinouts/hellen/uaefi121/
+
+[Schematics rev a](Hardware/Hellen/uaefi121-a-schematic.pdf)