ACECARHeads Up Display Digital Speedometer, Upgrade OBD2+GPS Mode Car HUD, with Tachometer Troubleshooting Read ECU Data Display Improvement Warning Function, for All Vehicles

Initially, I was not really impressed with this and I was contemplating requesting a RETURN and Refund.The main issue was that unit ships in a state which will NOT auto power down! The base unit itself would remain lit and the backlighting of my 2018 Sport Night Edition, 6-gauge dash cluster with 7” LCD central info screen would stay ON !!... This was indefinite and would of course be a Battery KILLER!The supplied “leaflet” has poorly worded instructions in a barely readable tiny type font! and using the all-in-one single button/Jog dial for altering the unit's settings feels counter intuitive. After a lengthy and rather frustrating trial and error set-up period I was able to FINALLY get it right. This will (for RAM Classic owners) require you to get to menu item #9 and set voltage to 13.2 volts) Once you have managed to navigate this convoluted process your unit will Auto off when your dash cluster cycles through the vehicle shutdown process.Ok, after that long bit of frustration aside..The “POSITIVES”...- Did not cause any info anomalies on the Ram Classic dash cluster and did not throw any OBD error codes!- Base Unit is fairly unobtrusive and neatly nestles onto the first ridge in the upper dash of the Ram “Classic” just behind where the VIN plate is located. For me, this location also provided what I felt was the optimal projected image unto the windshield. This location also allows for the complete concealment of the connected cabling.- Speed and Info appears to display accurately which should be expected since its just pulling OBD info.- Projected image seems bright enough in sunlight and auto adjusts as conditions darken.- For the money (once the set-up is sorted out) this is a decent, functioning useful piece of gear.The “NEGATIVES”...- There is a slight “double-image” in the glass. No amount of repositioning of the base unit will eliminate this as its an issue of simple physics! (Ie: Windshield safety glass construction) However, I have not made use of the supplied screen reflector yet. I am trying to avoid affixing anything to my glass at this point.- TERRIBLE instructions! A little bit more detail may have taken 1 hour of frustration out of the process. I was almost at the point of wanting to call Amazon to request a refund!In the end, this was almost exactly what I was hoping for! I had been used to having a HUD in some of my prior vehicles and I missed having one. This unit allows me to leave my LCD cluster in the “Fuel Eco.” Screen or “Tire Pressure” Screen while projecting my Speed into the windshield glass. I set the unit to be as clean as possible by showing SPEED ONLY.. (No bar graph or useless dots) I have to say that this thing is fantastic during night driving.After getting the unit to now properly power down I am going to up my rating to 4* where it would have been 1* (ZERO) if I had ended up returning it.At some point I may try using the supplied transparent reflector screen to see if it cleans up the image a bit and will report back if I think it affects my rating. For now, the image is acceptable to me.Sorry for the LONG RAMBLE, but I hope it will help 2013-2019 RAM "Classic" owners to get the most out of this product.One final note: I did not attempt to use this in the USB powered mode at all and can offer zero input as to trying to use this in that way. As far as I am concerned, the whole point of having one of these is that it can function and gets its required power simply by connecting directly to the OBD port.

So far so good. I had a smaller HUD display that was pretty slow and no GPS so all I had to do really was plug this one is. I did have to adjust the speed value some but I like having speed and water temp at the same time. The RPM gauge is a little goofy as the blue and the numbers dissappear as rpms increase, seems like you'd want it the other way as in blue and numbers show as RPMS increase and then dissappear as they decrease. Maybe there is an option for that, idk haven't gotten that deep with it yet but overall pretty happy with it. The display is nice.

I picked this one because you don't have to have all the extra garbage on your windshield. All I wanted was the speedometer. Simpler looks more stock anyway. I ran only the speedometer the first few months, only recently did I turn on the RPM line (pictured). I like having that option. I can add more too if I wanted, but overall, HUDs look better when they're simpler. If I want to know more about my car, I'll use my dashboard or bluetooth OBD reader.Instructions were simple, and in english. Not sure why so many are having issues with this step.Picture looks a little blurry but it actually looks better than that. On the brightest days around noonish, it is a little harder to see, but still visible. This can be alleviated by using the included darkened transparent film. After a weeks, I put the film on to try it out, but in the end, I removed it. I prefer the look of my windshield without the square on it and I really didn't need it anyway. At night, it's very bright.I took one star away because of the "auto" setting for brightness. I mean, it's the only real option unless you want to change it manually all the time. I feel the brightness should have several levels of Auto. At noon-time, at it's highest brightness, I can see it, but I feel like it should do better to be more usable in that scenario. On the other hand, at night, it's brighter than it needs to be. Brightness settings should not be 1, 2, 3, or "Auto." It should be Auto 1, Auto 2, or Auto 3, which each being brightest for daytime (because it'll never be too bright with the sun out), but a dimmer night setting. Like each Auto 1, Auto 2, etc could be a differently level of dimmness at night.That's a problem I find with most chinese electronics, not quite bright enough during the day, but too dang bright at night as if they're compensating at night for what they can't do during the day.Overall, I do recommend this, despite my one complaint. My complaint is common among all HUDs so if you had to choose one, pick this one.You will have to fiddle with the settings to get it calibrated to your vehicles speedometer but it's not hard, you just gotta read the instructions.Most of the bad reviews on here are because no one wants to read instructions. They plug it up and then complain.

Decent little HUD, innit.TL;DR because I'm nice.--Total: 3.14159/5 stars.Brightness: 5/5.Setup: 3/5Quality: 3.625 because at least it doesn't reflect the sun directly into your eye holes.Accuracy: 2 - because that's how many seconds it will take you to over-rev and throw a connecting rod into the next presidential election if you try to use this like a shift light. You'll be lucky if you don't blow the welds on the intake.--Comes with a very thick "no slip" rubber pad which is more than enough for the light weight. Auto brightness settings are very responsive to ambient light and the display is bright enough to go bare-glass no reflector, if you don't mind the double reflection (or entendre). The HUD has a nice matte display surface that doesn't reflect too much sun, and a built in backing to prevent the display from shining directly into your eyes at night. Unfortunately the backstop for the display means it cannot be tilted very far forward toward the windshield before it cuts off the top of the numbers. Won't matter for every car/dash but I couldn't put it anywhere behind my steering wheel. Wasn't very happy with the reflective film since it was pretty thick and difficult to see through, but it works... Just don't put it dead center in your line of sight.Setup and controls are my least favorite part of this HUD, since you have to manually reference abstract list of numbers to features/settings. Don't lose your list! Large number of settings and adjustments you can make, which is nice and I very much appreciate. Kind of finicky though, I wish they had used different buttons to control it.I have some experience with tools and cars, and it took me about 30 minutes to install the first time. It only took 30 seconds of driving for me to not like where I put it...and 3 more tries to get it positioned where I actually wanted it (lower left, a few inches from the windshield edges as viewed from the driver seat). Make sure to drive around with it BEFORE you stick the reflector to the windshield.With some tweaking I was able to get it to match my speedometer really well. The ribbon cable to ODB2 was plenty long, and thin enough to tuck into tight places if you're installing permanently. No issues or failures with any of the hardware.I don't know if it's my car or the display ( I have my suspicions ) but this HUD is far better for highway driving than city. It seems like the screen takes about 1 second to update every time and it's laggy on top of that. Don't expect to use this for anything more than monitoring your speed out of the corner of your eye since it's not quick enough to time your shift points or 0-60s.Would recommend to my friends unless they live in California, where it is known to cause cancer.Probably won't buy it again.

When you try to reflect light off the inside of your car's windshield, you get two images, but that is very much preferable to using the rectangular film, because the film sucks. You can still read the numbers no problem, and with your primary attention on the road, you won't even notice the overlapped double image. The speed number is all you need, and make sure to project it onto the bottom of your windshield, because you must never ask an LED to compete with the sun-lit sky, because it will always lose. As long as your speed is projected in front of the road, then all is good.The setting menu navigation is tricky, because the button press-timing is not calibrated properly. For a 1-second press, you need to tap the button instantaneously, then remove your finger. For the 5-second press, that registers in less than 2 seconds.For displaying the correct speed, you need to perform a fast highway run, over 100 km/hr, and then adjust the settings so that at high speed, the error is less than 1 km/hr. Then any slower speed will be perfect.Once you have the placement and the calibration figured out perfectly, then the HUD is an indispensable joy to drive with.Every car sold should have an HUD built into it from the factory.