Avital 3100LX Security System (W/O Siren)

DEI, hilarious name for a company these days. But I have to say, based on merit, this company's product is outstanding. Easy install once you figure out your car's wiring. Youtuber Donny The Late Model Tech has a great instructional Install Video and how to on adding power locks to integrate this Basic but Great Alarm Kit. I also order DEI's Siren to complete the rig for my 1998 GMC with crank up windows. Yes, manual windows keeping them.

Former Pro car audio & security installer. This is a great value for those looking for a simple alarm that does the trick. This is made by DEI and they are the largest car alarm Co in the World. They make the same units all with different names. The wiring on these hasn;t changed much over the last 20 years. You could pop this in place of an older unit you lost the remotes to. Its cherper to buy this than buy two remote.

I replaced a recently installed Scytek A15 alarm system since I was having a lot of headaches with the Scytek unit.Both are priced similarly, and the Scytek had the advantage of having a remote start function built in - if everything worked.I had problems with the Scytek A15 blinking 11-flashes occasionally which is not documented; contacting Scytek is waste of time / zero customer service.I've been hesitant of DEI products for years, but I was in the market for an entry-level alarm system that just did the basics.For the price, it's hard to beat at under US$50.I call myself a pro-level car audio / security installer, so installation and adjustments does not scare me.Having experience with automotive wiring will help a lot.The only ding against the Avital unit is that the remotes are not moisture resistant - drop it in some water will most likely kill it the first try.I prefer the look of the Scytek A15 remotes, but the Avital remotes are more functional - ARM / DISARM is obvious on the wings, even the dark - unlike the Scytek A15 remotes have ARM button over the DISARM button in a vertical configuration with no raised bumps to tell the difference.It's been about a month so far, and almost zero problems or surprises.I'm still tweaking the (internal) shock sensor adjustment, but everything works as documented.I'm surprised at the reliability of the Avital system, and I can whole-heartedly recommend this (over the Scytek trash).

I wanted only lock and unlock for my 1999 4Runner, which like many people, I got used and lacking factory fobs. Mine was different from most in that it lacked the factory or dealer-installed receiver. There's no prewire vampires in this model-year, unlike in the mid-90s trucks, so it's a matter of searching endlessly online to find which wires, and where, to tap. (If you need help with yours, ask in comments.)Once installed, the keyless entry does exactly what I wanted it to do -- gives me a key fob and the ability to lock and unlock. I didn't want any of the other bells and whistles like auto-locking, horn beep, bump sensor, all that. It's gonna be nice for people who need that, but I want to keep it simple. My coworker just got locked *in* his OnStar-equipped vehicle for half an hour while he called them to have them remotely disable the accidental panic mode and unlock it for him. And if there'd been a fire? Need I say more? Thus I unpinned all of the unwanted leads from the molex and went with the minimum four (gnd, B+, lock, unlock).I like the little fobs, which are more compact than all I've used before. The buttons do need to be depressed further than I'm used to, which really is a good thing to avoid a lot of unwanted actuations from a pocket.The instructions wander needlessly into dividing up functions into zones, as if that somehow gives them some special importance. The manual doesn't answer fundamental questions such as can one simply not use certain functions without causing a stir. It was around then that I ditched the manual, disassembled the molex, and did the rest by intuition. Works fine.

I had an old Viper ESP 500 alarm installed that I couldn't program any more for some reason. It also developed the annoying bug of passive arming with the door open. I about gave up when i found this inexpensive Avital alarm, which is actually made by the same company. It was literally a drop in replacement for the old alarm. I just disconnected the old one and reconnected the relevant cables on this one and voila! It works perfectly out of the box. This one has a connector for a horn alarm, but I had a siren installed already and works with it. The old one also had an external shock sensor you had to plug in, but this one has it built in. Best of all, the passive arming works as it should (active arming is the default but reprogramming is much easier!).

I bought this for my 1989 240sx before moving into a large city for some added security and peace of mind. The installation took about 3 hours. You'll need a test light or multimeter, wire stripper, soldering iron, heat shrink, electrical tape, and cloth harness tape for the best results. I highly recommend you do some research into what comes in this kit. You'll need to purchase a siren, door lock actuators (if you don't already have power locks), and a rely. I recommend the DLS 451M relay. It plugs right in and handles getting solid power to your actuators. The alarm doesn't put out enough on its own. You can also find all the info needed online regarding the wiring for your car. We live in a wonderful time where knowledge is free and easily accessible. It's worth skipping the wire splicers and soldering everything in for better longevity with the system. You can do it! Soldering isn't that hard with some practice.Overall I'd buy it again. Does what it's supposed to with no issues so far. I've installed this on 3 cars now. If I have any I'll update the post.