Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Recon Customer Service

This light bar will not fit a 2011 GMC HD 3500 truck that has a factory light bar installed. The mounting holes will not line up. The light bar wiring is offset and will not line up with the factory wiring access hole. Although Recon lights look good they fill with condensation (I have had 3 sets). Contact with Recon has proven fruitless as they will not stand behind purchases made through Amazon.