Murphy's law of Solar power: - Only 20 minutes after the post-man delivered my new "Nekteck" solar-array (for my tricycle) - before I could even open the package; the RAIN started, and then, of course, I couldn't tricycle, and there wasn't enough SOLAR POWER to even turn the damned thing ON...  - PROVING, once again, that they were right:  Murphy's Law of Solar Power!