Etopars Car Motor Universal Smoke Tint Len 2" 52mm Tacho Tachometer Indicator Gauge Meter

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It works. Needle sits below 0, just like the picture. Back lighting is too bit bright at night; but the bright back lighting is needed for daytime use because of the dark smoke tinted lens. Vibrates when boost pressure increases probably due to the lighrweight spring mechanism and no vibration damping fluid inside the gauge. Fast delivery. It would be better if it didnt vibrate and the needle sat naturally at zero.I was able to zero the needle by squeezing a small metal u shaped lever inside with a needle nose plier. Open it up by gently prising the back of the bezel and unscrewing the nut holding the vacuum connection and push the dial fowards and outwards. To stop the meter from vibrating and buzzing, I put two approx 0.7mm "restrictor pills" made from some plastic instant glue applicator tips whittled down to fit inside the clear hose at the meter end and engine end.

So im revising my review. Im upping this review to two or three. I have subtracted points because the wires arent wired to the correct colors. Here is what will get this tach working right for you.White is key power and powers the tachBlack is groundYellow is headlight switch powerGreen is coilI couldnt find a use for red. I think it is for a different kind of coil.The colors are definitely wired differently than they should be.

The gauge shows a vacuum at rest, not very accurate.

The egt sensor wouldn't stay in the exhaust no matter how tight I got it total waste of money I had to reinstall the sensor every time I drove my truck