ELING Universal 85mm GPS Speedometer 125MPH Speedo Odometer Adjustable for Boat RV Car Truck Motorcycle 3 3/8 12V 24V with Backlight

Ok, the instructions aren't awesome, but they are good enough to get the job done.I installed this in my vintage RV that had a bad speedo, and it didn't take me long to get wired into the existing wiring and set up with the old mileage shown on the RV odometer.I like that this particular model allows me to eliminate the extra lights for the turn signals and high beams, which will be nice when I make other improvements to the instrument cluster.I also chose this one because 60mph is straight up. an RV doesn't need a 125mph speedometer, but having the needle straight up makes it easier to read in my case.

I was a bit worried about it after I ordered it, wondering if it would work properly and not be erratic. Boy was I pleasantly surprised after I got it hooked up on my motorcycle. This thing is absolutely accurate and there is no JUMPING of the needle. It's as smooth working as the speedometer in my sixty thousand dollar truck. Also I chose this speedometer because it is graduated in "fives" with no 3.3 mph (or something like that) marks in between, which is ridiculous. With this speedometer each mark is five mph like it should be. It looks cool on my bike and if it weren't for me being old and technologically challenged I would show a picture of it on my bike. The left turn, right turn and high beam lights work well although the left and right turn indicators need to be brighter because they're hard to see on a sunny day. The backlight glows nicely; I chose red. The wiring directions are not the best in the world but I figured it out. Do I recommend it? Yes, it's a great product.

First one had issue,they quickly sent me another I was glad they gave me plenty of time to return defective one so I didn't have to remove wiring installed from first one.Plugged it in worked good except if you're somewhere there's poor signal you have to wait for one on startup or no speedo,but I've never lost signal when driving so far.Warning buzzer doesn't work have to try it again

Great product. I had no trouble installing this and once setup it is very dependable. Just to clarify: you can input your old speedometer's mileage reading and it will start the odometer from that input number. It also has a trip odometer that can be accessed and reset from the included, optional, external button. The wiring for the external button is one wire goes to the clearly marked wire on the speedometer harness, the other post on the button goes to ground. Day to day, I don't think you would know my vehicle's speedometer is GPS, the smoothing algorithm is excellent! The reason my review is 4 star instead of 5 is for the instructions. They're like putting together a board puzzle, seller should re write them in actual English. I would recommend this product and I would buy it again. I asked the seller two questions and they replied quickly.

I bought this model specifically because of the turn signal and high beam indicators that are featured. Fit my application perfectly.

I picked this GPS speedometer over the other listed because of the external button. The button is there, but it is not hooked up and there are no instructions to tell you how to hook it up. How are you supposed to use it without the proper instructions?

Preface: I have had this unit since January of 2021. I installed this in March, however truck did not get on the road until June frequently. Since install, I have about 3300 miles logged. Total run time (according to secondary gauge) is roughly about 75 hours.Good Stuff:Initial quality was good. Instructions were premium chinesium at best, however it was easy enough to figure out.Gauge cluster is easy enough to read. Headlight and turn signal indicators are nice and bright. There are multiple display colors (red and orange) to choose from for night driving. The facing lights up white.Now the stupid stuff:The “auxiliary” button wire is a 12V+ output, that needs to be grounded. This makes no sense whatsoever. Nothing in the instructions to notate this.The initial set up calibration is god awful. Is not clear when in KM/H or in MPH. Also, absolutely stupid that the auxiliary button does not have the same functionality as the button on the back of the gauge. Meaning you have to PULL APART YOUR DASH TO ADJUST THE GAUGE. The auxiliary button literally only toggles between odometer and trip. That’s it.At times in sunlight, the odometer digital read out is not readable. At all. Which is really confusing as I have an identical tachometer directly next to it from a different company mounted at the same angle and at the same distance and it is perfect during the daylight.The gauge bounces. Like a lot. Like a lot a lot. It never finds a range to stick at. Basically fluctuating about 4 mph the entire time while driving (I compared to another speedo onboard).Now the absolute worst:The GPS barely connects. It does this absolutely stupid count up where it attempts (keyword) to find a satellite and renders the gauge completely useless until it finds one. Or, as it does almost every time I use it now, counts all the way up to 500 and then errors out until I restart the truck. This is gauge has went from annoying, like when trying to calculate gas mileage at a gas station and then it starting to count as I was under a very thin awning and never finding GPS to the point where I give up and drive off. To the point of unusable where it is like a 40/60% chance of working to not working. And again to remind everyone, when it doesn’t work, it just reads “err” and sits at 0 or whatever the last speed was at. My favorite is actually when it loses connection going down the road so then it says I’m doing 70 when I’m doing 40.I know what you are thinking, the GPS sensor must be buried in the dash and it can’t find a signal. Wrong. It’s directly on top of my dash not obstructed by anything at all. Has clear, direct angle to the sky. Also, there is no directions on which way the GPS is supposed to be mounted, so I have tried it both ways and still no success. It’s totally hit or miss if it will work or not. And with this being what I would consider a critical safety piece, I think it’s completely unacceptable. I’d highly recommend looking elsewhere for a GPS speedo.

Only thing I found is the instructions are very unclear when it comes to the external button they say "external button power negative"They mean ground also wire is labeled with a( + ) but it's a ground wire they need to clear that up

This is the first of two I had bought for a kit car. This first one failed before I could even get the car out the garage, not sure what the problem was, but only backlight worked. Replacement seems more reliable, though it's frustrating as you have to wait over a week for delivery.

It’s going 20 per outta the box , no power hooked to it. So prolly won’t make the cut on the resto project