Identifying Which Generation Super73 Z1 You Have
Before ordering parts for you Z1 you will need to know which generation Z1 you have.
The easiest way is by looking at the motor cable connection if it has the threaded lock type it is a first generation:

For comparison:
First Generation Plug
2nd Generation Plug
Next there is the main control cable:
First Generation has 8 pins and Second Generation has 11 pins (see below):
First Generation 8 pin
2nd Generation 11 pin
These are all ways to identify without opening seat to check model on controller. However, this is the best way to verify:
First Generation will say SUPER03 as model and Second Generation will say SUPER03-C as model:
First Generation "SUPER03"
Second Generation "Super03-C"
ALWAYS verify your model before ordering any parts.