Water Hookup for W&D

Since Alfa went out of business long ago, your best bet if you want to tackle this as a DIY, is look online for pictures of your model and see if you can find one that has the W/D. It might give you an indication of where/how the plumbing is. Don't overlook that you also need to cut a hole to the outside to install the vent. Have you looked online for Alfa FW owners groups? The other option is take it to a dealer or RV tech and have them rough the plumbing and vent in for you. It could also be that your unit was never prepped for W/D. Typically, if a unit is prepped from the factory the plumbing is all there in a washer/ dryer prep box with hot, cold and drain and a template to show where to cut the hole for the vent. If yours doesn't have it it's probable that it is not prepped and without a lot of invasive plumbing you won't be able to hook it up.