Dynamite is a source of destruction while a Dynamo is a source of power, but in a sense, destruction is a form of power and to have a dream in which you see either of these things, it can have a similar meaning.
If you have a dream about dynamite then this means that you feel like your life has gotten very interesting to the point that it is unpredictable and wildly excitable. There is a lot that is going on for you and you have a lot of problems. But at the same time there are always new opportunities presenting themselves and you are also going through a lot of intense changes. Perhaps this dream also means that you met someone who is like dynamite. They can be great and fun, and then at other times wildly volatile and scary.
If you have a dream that you are a dynamo or that you are making use of a dynamo then this means that you feel like you have an endless source of energy to work from. You are living off a seemingly limitless source of energy and it is making you very interesting to those around you. You are making a great impression on the world and you are making sure to do the best you can to do this well. This is what a dream about a dynamo means. Never lose that electric spirit. This is the spirit that will act as a backup generator when you feel down and it is through this electric power that you will be able to get through the best times and the worst times no matter what is happening.