BEST OF – Adding modern features to an older vehicle is a great idea that the aftermarket keeps getting wrong. I have tested four of these. One is worth the money, one comes with a serious caveat, and two I would tell you to leave on the shelf.
This page is shorter on recommendations than most, and that is the honest result rather than an oversight. Aftermarket car tech is a category where the marketing tends to run well ahead of the hardware, and a page that pretended otherwise would not be worth reading. Here is what each one actually did.
Worth buying: Technaxx TX-100 car alarm
After moving to a city where break-ins are a routine worry, I wanted cheap protection for a truck that is not a collector’s item but still has windows I would rather keep intact. The TX-100 costs $49.99 and looks at a glance like a two-port USB car charger.
Inside that charger-shaped body sits a passive infrared motion detector, a 110dB siren and a rechargeable battery. While the engine runs it sits in the cigarette lighter socket, charges itself and charges your devices. With the car off it runs on its internal battery, arms from the included remote, and screams if a door opens or a window breaks. Weak construction, visible placement and easy removal stop it being a complete security solution, and as a cheap deterrent for a car with no protection at all, it does the job.
Read the full Technaxx TX-100 review.
Buy with a caveat: 70mai TPMS Lite
Tire pressure monitoring became standard equipment on 2007 and newer vehicles, which leaves a lot of older cars without it. The 70mai TPMS Lite adds it for $54.99 with four valve stem sensors, a solar-assisted receiver that sits on the dash, and a clean, quickly understood app. Sensor batteries are rated for up to two years and each sensor is replaceable.
Here is the caveat, and for American drivers it is a big one. My unit could not be switched to U.S. units on either the app or the receiver, and 70mai support never answered a ticket about it. Readings were also inconsistent, and the box arrived with no instructions at all. It performs the core job. If you want reliable accuracy in PSI and Fahrenheit, there are likely better choices.
Read the full 70mai TPMS Lite review.
I would skip: CARLUEX PRO+ wireless CarPlay adapter
My Tacoma’s factory infotainment is the weakest thing about the truck, which is a common story in older vehicles. The CARLUEX PRO+ promises to fix that by taking a car with wired CarPlay or Android Auto and adding a wireless connection, Android 13, streaming apps, 64GB of storage expandable to 128GB, and optional cellular data.
I wanted it to work. What $339.00 bought was a cluttered interface, frequent disconnects, app lag and missing media information, in a setup that only really behaves once you add a separate SIM and data plan on top. If you specifically want simplified Netflix or YouTube on the car screen and do not mind babysitting another connected device, it might suit you. I would put the money toward a proper head unit instead.
Read the full CARLUEX PRO+ review.
I would skip: LOOK-IT wireless backup camera
The idea is genuinely good. A battery-powered license plate frame holds the camera, your phone becomes the screen over Bluetooth, and a remote fob wakes it up, so a car built before backup cameras gets one without running video cable through the whole vehicle. Installation really is mostly painless.
The execution is where it falls down. The image is VGA at 640 by 480, grainy and pixelated in daylight and rougher at night. The camera responded to the fob only about three quarters of the time, and the app has to be actively running for the feed to appear at all. At $50 to $100 those tradeoffs would be arguable. At $249.00, with better options available, it is asking far too much.
What actually matters
Anything that depends on a phone app inherits that app’s quality, and aftermarket car accessories have some of the worst apps in consumer electronics. Two of the four here were undone by software rather than hardware. Look for app reviews before you look at the product’s own specs.
Check the units and regional settings before buying anything with a display. A gauge stuck in Celsius and bar is useless to an American driver, and support may never answer the question. This sounds like a small detail right up to the point where you own one.
Compare the add-on against simply upgrading the real thing. A $339 adapter bolted onto a dated head unit is most of the way to a modern head unit that does the job properly and permanently. The same logic applies to backup cameras and stereo upgrades across the board.
How I pick
Everything here got installed in a vehicle I actually drive and lived with over weeks of ordinary use, which is the only way disconnects, laggy apps and cameras that ignore the button reveal themselves. A page like this is only worth anything if the failures make it in alongside the wins.
