1989 Pace Arrow Alternator Problem

I have a 1989 Pace Arrow, Class A motorhome. I had to jump it on a weekly basis. I took it to the shop and learned a very expensive lesson. I was told the alternator wasn't charging the battery. Under the refrigerator, there is a circuit breaker box and inside that box there are two fuses. My fuses had went bad which prevented my battery from charging. A package of 30 amp fuses, cost approximately $5.00. I was charged approximately $150.00. I was thankful that it wasn't a much bigger issue.

However, I am experiencing the same problem again. This time it's not the fuses.

Does this model RV have an alternator? If so where is it?

I was told it would be next year before a mechanic could look at it, I don't want to wait that long.