Conversion to Rally Gauges requires some involved modifications to the non-guage wiring harnesses OR replacement of the OEM underdash main wiring harness (including the fuse block) and the engine wiring harness in the engine compartment. The wiring mods are described in detail in the FAQ's here. You also have to change out the entire gauge cluster (both speedo and fuel module) along with the circuit board behind the cluster.
You CANNOT just swap out the RH fuel gauge with Rally Gauges. Besides the changes in wiring and circuit boards, the non gauge speedo has only the LH turn signal light, while the gauge speed has both at the bottom. In addition, the temp and oil pressure sensors on the engine are different. The gauge package was also only available as a factory option due to the changes involved. This is completely different from the option console mounted gauges for Camaros.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI
