Modern white LED through-the-dial lighting provides clear visibility during nighttime use. sending unit adapters (1/4" 3/8" and 1/2" NPT adapters). The dimensions for the antenna are quite small (1.472" x 1.339" x 0.508") allowing it to be easily hidden.. mounting hardware and detailed instructions for installation.. The GPS antenna utilizes up to 3 GPS satellites simultaneously and samples 10 times per second. Autometers Race Proven Air-Core Electric Instruments Provide Quick And Accurate Readings While Keeping Hazardous Fluids Outside Of The Vehicle. 12 and 16 volt compatible compatible with nearly every street car or race car electrical system. Kit includes fuel level sender (240E/33F). These highly accurate GPS Speedometers include an omnidirectional 10 Hz antenna (10 samples per second) with a 16ft.. oil pressure sender water temperature sender 2-wire hall-effect speed sender that is compatible with GM/Chrysler applications (7/8" - 18THD). cable which is required for operation.