Carrfan- 3.75" Car Universal Black Tachometer Gauge White Inter Shift Light 0-8000 RPM, Only for 12V Petrol Vehicles

Installed in my 1994 C1500 after the factory tac quit working. The tac looks good and seems to perform really well with my setup. Make sure you set it for 4,6 or 8 cylinders. I have mine wired into the headlight switch for backlighting and it works great. If you are looking for a decent tac on a budget this one is it.

Bought this Tachometer to set the idle with. The size of the clock is nice and big and lets you see the reading easier and has a nice appearance. Wiring the Tachometer is simple, but the set up instructions leave you guessing. The picture on the site where you buy it on Amazon showed a switch on the back to set it to 4, 6, or 8 cylinders. Mine came without that switch. After several tries and startups, the needle never smoothens out to show what RPM you are getting, and the needle bounces back and forth continually between 25,000 and 55,000 RPM even though the engine is only idling. This is not a good dependable working item, the advertisement for this item looks persuasive, but you will be disappointed with the performance.

This tachometer was perfect size I wanted and the looks and the back lighting was good and the shift light was a bonus. You can change your limit whenever you want to.The other reviews say negative things such as the bouncing of the needle. I actually had the same issue but I fixed it with something simple.Add a resistor in the feed wire and it fixes that issue. I spent alot of time of figuring this issue out.The pic I included is what I used. (22k ohm .5 watt)You can find it on Amazon of course and I bought a whole bundle of different ones and I found the right one.Hope this helps someone else that has this issue because this tachometer actually works well and I was very excited to get it working properly.

It works amazing for the price! Large and bright! Appears to be very accurate. Shift light works. Wiring is so simple. I took someone's advice and immediately wired a 22k ohm 0.5 watt resistor ($6 for pack of 100 on Amazon) to the green signal wire and the needle has 0 bounce but it also appears to have no lag! People reported that it will not work on old cars, hei distributors or any distributor but that's exactly what I did. Perhaps the lack of adding a resistor is the reason it did not work for them. Cylinder setting is cool and easy (aslo critical because it will read off by a few hundred rpm if not set). Worth every penny imo. That is as long as it does not die soon. You will need extra length of wire most likely and it's large so you may have a hard time picking a place to mount it perfectly. Hope this helps someone

Hooked this thing up to a simulation rig I'm using to learn stick, since I figured it'd be nice to have a real, physical tachometer to look at. Turns out it's not that great--acceptable for what I'm using it for, but I'd much rather spring for a higher end gauge if I was using this in a real car.Other reviews have mentioned "jumpiness" so I'll elaborate on that. This thing has a relatively low "resolution" on its stepper motor--either due to some static friction problems, or due to just using an improperly specced stepper motor. I'm not sure which. When the needle needs to move at a gradual pace (for instance, when releasing the accelerator after revving the engine) it moves mostly accurately, but you can tell that it's speeding up and slowing down at parts, as if the stepper is struggling to turn the needle properly. Similarly when slowly revving up, the needle will gradually "tick" its way up, rather than smoothly rising like you'd expect. I wonder if the motor just wasn't oiled enough or something.Sometimes the needle will just outright jump up or down on RPMs, as if the microcontroller is misreading the speed. It'll return to the correct number right after. I have to assume this is a flaw with the unit, but there's a slight chance there's something wrong with how I'm feeding the signal to it since this isn't a real car.I *can* say that this unit appears to accurately hit all numbers from 0 to 8000 rpm reasonably close, and it gets to those numbers without significant delay. Not sure what was wrong with other reviewer's setups to have issues there--maybe just different flaws for different units.Upsides: The shift light does work, and the backlighting shows up evenly across the face. The unit is only backlit when the white wire receives a 12v signal (i.e. the headlights are on). As far as I can tell this is directly wired as such and can't be changed.Unsurprisingly, you get what you paid for. It's a great shame that this isn't a better gauge, because looking at the individual parts of a tach, you'd expect it to be possible to make these a lot cheaper than the going market rate.

Useless, this Tachometer couldn't read the rpm of a motor is it's life depended on it. It looked cheap but I held out hope it would actually work, the wires are so small gauge it was hard to find but connectors to even wire this into my vehicle. Items like this make me not want to buy on amazon.

Decent little unit, got it on the dash of my 94 f-150. For the price it is what it’s advertised as, not a high dollar fancy gauge but it’s held up for several months without issue. If I had one complaint it’s that that you can’t control the brightness and that sucker is pretty bright. If I’m cruising at night I just put a hat over it. Good product, I’ll likely buy the same one next time

The media could not be loaded. Smooth needle response, bright back-light and such a great price!