diff --git a/docs/impl/plans/Z27AG-CAPTURES.md b/docs/impl/plans/Z27AG-CAPTURES.md
index bb8d6b9..6790133 100644
--- a/docs/impl/plans/Z27AG-CAPTURES.md
+++ b/docs/impl/plans/Z27AG-CAPTURES.md
@@ -1,7 +1,7 @@
 ---
 type: plan
 status: ready
-updated: 2026-10-12
+updated: 2026-10-13
 ---
 # Z27AG decoding captures: what to do in the car
 
@@ -51,7 +51,7 @@ action between them beats a quick one. Wait about 3 s between steps.
 | 3 | Brake: press, hold 3 s, release; three times | `3 brake on` / `3 brake off` each time | brake switch, maybe pressure |
 | 4 | Clutch: same, three times | `4 clutch on` / `4 clutch off` | clutch switch |
 | 5 | Steering: centre → full left → full right → centre, slowly | `5 steer start` / `5 steer end` | steering angle |
-| 6 | Gears: 1, 2, 3, 4, 5, R, neutral, 3 s each | `6 gear 1` … `6 gear R`, `6 neutral` | reverse switch (gear position if broadcast) |
+| 6 | Gears: 1, 2, 3, 4, 5, R, neutral, 3 s each | `6 gear 1` … `6 gear R`, `6 neutral` | reverse, likely as the reverse-light bit (diesel forfour: `423` byte 1 bit 3); no other gearbox signal expected — gear comes from rpm ÷ speed (step 22) |
 | 7 | Handbrake up, down, up | `7 handbrake on` / `off` | handbrake switch |
 | 8 | Indicator left 5 s, right 5 s, hazards 5 s | `8 left`, `8 right`, `8 hazard`, `8 off` | indicator states |
 | 9 | Side lights, dipped, main beam, flash, fogs, off | one mark each | light states |