Yes I had to cut the metal backside the fit all 3 gauges. They cluster fit well, as far as know, in the dash even with these thing sticking out. The oil and Amp gauge are 1.5" (link small gauge) , the voltmeter is 2" (link volt gauge). The 2" voltmeter was just the perfect depth to be fix on the inside of the metal back piece, and fit with the face of the cluster.rumblefish360 said
It is a panel with printed circuit that I have cut to allow the voltmeter installation. Then I jump the signal and ground (5volts limiter, the gray box in the middle top of the circuit) to the new path. I solder rigth on the printed circuit it works really great.rumblefish360 said