Not having any keys for my basement storage compartment locks on my '90 Serengeti, and not finding any information here, I resorted to drilling out two locks so that I could open one compartment. Once inside I could see that they were Southco locks, called the company any they knew exactly what I needed, E3-5-15. Enter that on Amazon and you can have all the keys you need delivered next day. New locks are available too, however i'm going to replace the drilled locks with true keyed locks.
BTW, they do not seem to be actual locks, more like keyed knobs. Once opened you can turn the latch back and forth without the key.