410 T case identification

[chrome]

hey there,how do i find out if my t case is the 84 one with the plug or wires in it?? where should i be looking to find said wires?? or is it a plug hole thats filled with mud that i should be looking for

chers

[Swamped]

This helped me.

http://www.offroadexpress.co.nz/Forums/viewtopic.php?f=23&t=3709&start=0