Hi, I have a 94 Bounder diesel pusher 5.9 cummins. The filter on mine is on the passenger side fairly high up. It has a drain cap on the bottom. It is threaded on just like an oil filter. Hope that helps.
Mine is on the right side of the engine towards the front, has a semi-clears bowl with a drain valve and wire coming out the bottom. Yours may only have the drain and wire out of a metal filter. May have to get under the RV to see it.