1998 Jeep Wrangler Gauge Kits

The first one I got had the wrong hardware and was built wrong. The second gauges don't work right. When I called CARiD they got a hold of the company and told me it would be handled. I never heard from them again, just got a new one in the mail. I still can't get the gauges to work right. The tach is about 400 rpm off (even with the resistor) and the speedo just doesn't work, after I changed out the sending unit. The adopter kit doesn't work for the oil sending unit, there is a plugin the way. The water temperature gauge only works with their sensor which looks cheap. I had high hopes for this product and it just doesn't live up to the price. When I called CARiD they were very helpful, they even tried to get me in touch with Intellitronic, but they wouldn't talk to me.