Trying to identify NZGP TV Coverage?

Ive just unearthed some VHS TV coverage of the NZGP most probably in 1986 but there is no identification of the year.
As Ross Cheever seems to be winning it (Im watching it as I type) in a black JPS Ralt Im assuming its 1985 or 1986.
Ken Smith is in the Apple Car Co Ralt and other drivers doing well are Paul Radisich, Dave McMillan and Ted Prappas.

Any ideas which year it was? Ill try and post some stills later.

Hi Brett, that would be January 1985

Actually 86, 85 they were John Brandons 86 JPS, also no Prappas in 85.

delayed thanks seaqnmac27. Just finished the DVD. If anyone wants one I have to charge a wee bit to cover postage, blank dvd and copying time. so like $5.