They have been there for a year, i haven't had any issues w them? I plug and unplug them to turn them off and on so there no risk of electrocution, if it was to rain. They are clamped on there very well with rocks as extra security.
I don't see the harm, maybe if you guys explain your hesitation I would?
Remember that i live in southern cali where it rains like 10 days a year
Where have i been? I check in quietly and pop in when ever I feel I need to give my 2cents

1 RES: Mr. T
2 Dogs: Bentley & Chloé
4 fishies: In 55 gal aquarium
1- 2 Year old Son