What brand of Conversion did you purchase? This makes a huge difference in answering your question. Also, please note the Brand and Model of inverters in your coach. Production year 1996 was the start of the inverter-powered a/c's while driving down the road. Bear in mind, however, that if one or two plus the dash aren't enough, as Andre mentioned, just run the generator. Factory service technicians will tell you that the RV generators are their most problematic because they are not used enough. The same can be said for Prevost Over-the-Road A/C systems. The same generator in the "entertainer" or industrial applications that are run almost constantly yield VERY few problems, in comparison, because of their continual use.

These are how the convertors "generally" equipped their products:
Vantare's and Marathon coaches, if equipped with the Trace/Xantrex SW4024 inverters can run one a/c on each inverter while driving, for a total of 2. Royale coaches are usually set up, if they are equipped with the SW2512 inverters, to run one and generally that's the center a/c. Vogue's around that vintage were also set up to run one a/c, and that was the center or #2 as well. Angolas are a similar story, except for several relays to allow you to chose which one you run. Liberty coaches, because almost all are equipped with Prevost "Bus Air," were never equipped as factory to run rooftop a/c's. As a general rule, never attempt it if your coach has Bus Air, because the alternator can only support one or the other, not both concurrently.