A 1994 car will be rack and pinion equipped , there is no plug on the steering column. the lubrication is via the rack itself.
However unless you have a split gaiter , and therefore a leak, loss of lubricant from the rack is rather rare . Personally i would look for other reasons for stiff starring before scrutinising the r & p.
Look at lubrication of the stub axles, especially the bronze damper blades. They need to be prized upwards as you lube the central nipple to ensure that there is a layer of grease covering them between the axle and the pad.
Also check tyre pressures , have they lost air and therefore become harder to turn? Also check that the universal joints on the steering column are nicely greased.
Others will have further ideas I am sure and one of them should solve the issue for you.
