diff --git a/Hellen-128-Mercedes.md b/Hellen-128-Mercedes.md
index 3af4cf99..fee0348f 100644
--- a/Hellen-128-Mercedes.md
+++ b/Hellen-128-Mercedes.md
@@ -43,4 +43,14 @@ https://docs.google.com/spreadsheets/d/1JgGFJ8AggBFiKT_CQ1D6uYhaIsqeiH9RerxuVy1k
 | P27 | Ip | |
 | P28 | Vs/Ip | |
 | P29 | Vs | |
-| J19 | SWD | |
\ No newline at end of file
+| J19 | SWD | |
+
+## Ignition jumpers (rev. a)
+
+| Vehicle | F2 | F3 | F4 | F5 | F6 | F7 | F8 | F9 | F10 | F11 | F12 | F13 | F14 | F15 | F16 | F17 |
+| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
+| Connctor pin **(NOT jumper designator!!!)** | F4 | F5 | F6 | F7 | F9 | F10 | F11 | F12 | F13 | F14 | F16 | F17 | F18 | F19 | F20 | F21 |
+| IGNx signal | IGN5 | IGN5 | IGN3 | IGN3 | IGN7 | IGN7 | IGN8 | IGN8 | IGN4 | IGN4 | IGN2 | IGN6 | IGN6 | IGN2 | IGN1 | IGN1 |
+| 4 cyl 2 coil | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | ✔️ | 🟡 | 🟡 | 🟡 | 🟡 | 🟡 | ✔️ | 🟡 |
+| Other model | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
+🟡 - it doesn't matter, the specified pin is not connected