I think i got 1 blue lead with my 861 v2.5.

If they want you to hook up the 800v3 to the 861v3 with 3 leads it would make sense they supply you with 3 of them..
They do not seem to cost very much, and with the price of the units in mind it should be possible [Linked Image from softronix.com]

Jaco

Sold all M equipment