MANAGERS of residential buildings should get in the queue now to be wired up for Wharf Cable television next year, company executives said. ''We are in the enviable position of having many more buildings on our list than we can wire up immediately,'' said cable operations director David Keefe. He said people who contacted Wharf today with requests to have their buildings wired up to receive the territory's first pay television network, might, depending on their location, have to wait until at least the middle of next year before the team of engineers came round with their pliers and rolls of wiring. ''Our quota is very full through 1994,'' Mr Keefe said, adding that the company aimed to link up at least 70,000 residential units a month. Because the network would come on line at different places at different times, as Wharf Cable systematically sets up its 14 planned microwave transmitters on hillsides throughout the territory, buildings in Sha Tin and Tsing Yi, where transmitters are already in place, would have priority over other places. However, some buildings in the Mid-Levels, for example, for which transmitters are due to be in place by the first quarter of 1994, are already in the process of being connected. For residents to be able to see Wharf Cable programmes, a receiver of the scrambled signal has to be installed on the roof of their building or a nearby building, and fibre optic wiring has to be laid on all floors. If households then decide, individually, to take the $198 a month service, and make a one-month down-payment plus a returnable deposit of $500 ($300 if they live in public housing) then it should take about two days for a Wharf engineer to arrive to linka decoder box between their television set and the TV antenna outlet. ''For most people it will be as simple and unobtrusive as that,'' Mr Keefe said. However, he said that for a minority of people in older buildings it might be necessary to drill a hole into their apartments if their TV antennae do not have adequate connections. Despite the long lists of people who apparently want to get their MTV by cable, only about 300,000 households have the option of going down to Wharf's first service centre, opening in New Town Plaza in Sha Tin today, and requesting an immediate connection.