diff --git a/.gitignore b/.gitignore
index c984a14..e186714 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,8 @@
 .~lock.*.od?#
 *.bkp
 tmp
+docs/harness/harness-rotator-az.bom.tsv
+docs/harness/harness-rotator-az.gv
+docs/harness/harness-rotator-az.html
+docs/harness/harness-rotator-az.png
+docs/harness/harness-rotator-az.svg
diff --git a/README.md b/README.md
index b725175..766128f 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,14 @@ Designed for artificial satellite tracking.
 The core document is the Mighty Satellite Ground Station Bill of Materials (BoM).
 It is a spreadsheet in Libre Office format.
 
-* [Mighty Satellite Ground Station Bill of Materials](docs/Mighty-Satellite-Ground-Station.ods)
+* [Mighty Satellite Ground Station Bill of Materials](docs/bill-of-materials/Mighty-Satellite-Ground-Station.ods)
+
+
+# Cable Harnesses
+See `docs/harness` for wire harness diagrams.
+
+![Diagram of the azimuth rotator harness.](img/greenheron-alfaspid.png)
+*Diagram of the azimuth rotator harness.*
 
 
 # SatNOGS
@@ -90,4 +97,4 @@ website. Upstream sources under their respective copyrights.
 
 License: CC By SA 4.0 International and/or GPLv3+ at your discretion.
 
-*Copyright (C) 2022, Jeff Moe*
+*Copyright © 2022, Jeff Moe.*
diff --git a/img/harness-rotator-az.png b/img/harness-rotator-az.png
new file mode 100644
index 0000000..11554e2
Binary files /dev/null and b/img/harness-rotator-az.png differ