This is just a short FAQ to describe the wiring layout for the 52mm Greddy EGT gauge, since the directions come in Japanese only!
There are two separate harnesses: A two wire harness with a red and white wire. This is hooked up to the probe and should not be confusing. And a 4 wire harness with red, black, orange, and white wires. RED = Constant power BLACK = Ground ORANGE = Ignition power WHITE = Lighting Found in 2 minutes using google
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