Review on Derale 16789 Amperage Controller Thread by Thomas Unruh

Most unfortunate is that two devices have failed with different symptoms and the manufacturer wasn't very helpful when we called or didn't seem to care. I asked them to convince me to try the third block. Their best response was to blame my courier for mishandling the shipment because the devices are triple checked at the factory. This product is designed for use in vehicles under the hood and cannot withstand shipping? WOW!