After installing this lamp, it flickered like a disco light. After contacting the seller, he informed me that I would need to rewire the light and remove the ballast. This lamp was sold as a replacement lamp. No info on rewiring etc. I'm not an electrician so I'll apply for a refund. I'll let you know the status of the return later. **UPDATE: After requesting a refund, the company has issued a full refund. Very happy with the service. I think the lamp is a good product but not suitable for my lamp. Again I think the description should be corrected to let people know that this is not a simple replacement but will require rewiring if it hasn't already been done for the LED to work. Many Thanks.