Each setup is different, and there are a couple of factors to consider. First, consider the power source. Our cigarette lead will permit a maximum throughput of 5A, whereas our 240V transformers will handle between 3A and 5A depending on the model. Second, check the capacity of your dimmer switch. Our white dimmers are rated to 2A each, whereas our orange/white and tri-colour dimmers are rated to 5A. Refer to the specifications of your LED camp light product to determine its power draw, and then ensure you do not exceed the lower of the two ratings (power source / dimmer).