Resolve "Document HV connector choice"

Closes #3 (closed)

high-voltage-system/motor-connector.md

@@ -38,7 +38,7 @@ Can be bought: directly from Deutsch.
 
 ### Deutsch HD30/HDP20
 
-#### Alternative 1
+#### Alternative 1 (HDP20 24-7)
 
 Plug Model: HDP26-24-7SN-C038
 
@@ -48,4 +48,25 @@ Price: receptacle 30 €, 15 €
 
 Mouser links:
 - [Plug](https://pt.mouser.com/ProductDetail/TE-Connectivity-DEUTSCH/HDP26-24-7SN-C038?qs=%2fha2pyFaduiQ5WuJIGQK8MkTiwYIRnrV2uwWzXEtJGIhL0AER5yjlDymQgVwlObQ&tetid=o0s44ttq06b)
-- [Receptacle](https://pt.mouser.com/ProductDetail/TE-Connectivity-DEUTSCH/HDP24-24-7PN-C038?qs=%2fha2pyFadugAGtKOMieVsYl7ScCKqTUpE1DSssAHGylLhnYPMuQvFZrPqnXDi1BK)
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+- [Receptacle](https://pt.mouser.com/ProductDetail/TE-Connectivity-DEUTSCH/HDP24-24-7PN-C038?qs=%2fha2pyFadugAGtKOMieVsYl7ScCKqTUpE1DSssAHGylLhnYPMuQvFZrPqnXDi1BK)
+
+#### Alternative 2 (HDP20 24-9)
+
+Plug Model: HDP26-24-9SN/HDP26-24-9SE
+
+Receptacle: HDP24-24-9PN/HDP24-24-9PE
+
+#### Alternative 3 (HD30 24-9)
+
+Plug Model: HD36-24-9SN
+
+Receptacle: HD34-24-9PN
+
+Price: receptacle 15 €, plug 20 €
+
+Advantages:
+- Available in Mouser
+- Probably buyable internally by TE
+- Metal case for shileding
+- Backshells available (including 90º)
+- Boots available
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