Red LED Digital Speedometer

I could not get it to work. Tech support not helpful.

i own a 1990 gt4 and if any of u kno, they only go to 120mph on the meterso i purchase this product. upon receiving it, i had it installed within min., the gauge was not compatable with my car,called tech support, tech support was no help, said they were unfimilier with toyotas. bought the adapter and had it working. numbers were all over the place and it would not, could not calabrate the thing. finally had it working with the gps they sell (that i had to buy after tossin the adapter) and it didnt read accuratly, sun was shining and it would be so delayed, and would not come down from the highest number of mph it reached. After a month of having this, most of theLED's blew one after another. six months of having this in the car, i tossed it. stay away from this