I know this reply is probably 4 months too late, but maybe you'll get the reply, and if not maybe it will help others with the same question, just like you and i had:
Can you turn off the light in the ipod dock on the sundance spas.
Well neither the dealer nor the manufacturer (sundance) could help me, so i found out who made the light controller and emailed them.
SUCCESS!!! (ps, i purchased the external corner LED lights, which includes a photocell, so the external lights turn off durring the day)
Here's the reply i got from them:
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There is a "Mode" that allows your exterior lights to be turned off. (including the iPOD Dock).
By default, after power is applied your exterior lights are on Purple (Blue/Red), by pressing
and holding the top side control "Mode" button for 5 seconds, you can change the
exterior default colors to any of the standard modes. On the end of the list, there is
an "OFF" mode which will turn off the exterior lights.
Please note, the exterior lights must be ON mode (Interior OFF) in order for you set the default
mode. This means you must either by hold your hand over the photocell, do this at night, or
remove the photocell (an OPEN connection will turn them ON, a closed connection will turn them OFF).
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So if you don't have the external corner led lights, with all interior lights off, just press and hold the mode button on the light panel (the one that has 3 buttons), the mode button is the one in the middle, press and hold for 5 seconds, check to see if ipod dock light is off, if not press and hold mode for 5 seconds and check ipod light again, keep doing this until the light is off, it can take up to 10 times.
Also the light will turn back on when you have the interior lights on, but the lights off setting is remembered, so it will turn back off when the interior lights are off.
Also there are some other hidden light features/modes with this lights controller.
With your interior lights turned on, press and hold the mode button for 5 seconds.