Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Failed within 72 hours

Initially this product was great. Easy to install and really improved the location in which I needed them. However, one morning after roughly 72 post install, they stopped working. I did lot's of troubleshooting...checked bulbs, examined wiring harness, etc. But with no success. Ultimately I believe the adapter tripped for some reason, but there is no method of reseting. Could have been irregular power supply or power surge, but in any case, I would have expected to be able to reset the adapter and continue use.