Well i went onto MikesXS site to see which unit you have bought, (a link would have been the helpful thing to do when posting a part no asking for help ), and if you read the information about the unit you bought it has a, NOTE: in red about your model
Copied from MikesXS site.
Pamco Ultimate High Output - (1973-84 650's)
Kit Contains: 2pc. NGK BPR7EIX Iridium Spark Plugs,
Pamco Electronic Trigger Plate and rotor, 82Kv Cool run Ignition Coil,
Ignition coil mount bolts and standoff's, 5K NGK Spark Plug Caps
and XS Performance copper core Silicone Wires (20" each),
Ultimate Electronic Ignition Kit by Pamco, a proven reliable electronic trigger
system that replaces the stock XS650 breaker point type ignition. Works
with original advance assembly parts and is an easy set & forget install.
This Version is Pamco Petes Personal Choice!
Note: For some 1980-84 North American models see other kit versions which
include the advance parts needed that are normally absent on the 1980-84
models. Provides increased reliability and serious (caution!) ignition spark to
82Kv.
This kit does not have the E-Advance, (that's why it isn't in the kit you received) or the Advance rod which you need to mount a Pamco unit on, with or without an E-Advance.