I called Cooper on the phone and I told him my issues with my aftermarket alarm system. I purchased a used Honda Pilot some time ago and didn't realize it had an alarm issue which never manifested itself when I was considering purchasing the vehicle. After Cooper took the time to discuss with me over the phone some reasoning's why the alarm system may be having issues, then directing me to the potential problem and what to try first to fix the problem before he delved into it himself if what I tried didn't work, I took his advice and happily so far, after a few weeks, my alarm has not been sporadically going off. Cooper took the time on the phone with me and I am grateful for that. His knowledge of alarm systems if apparent and his tips for me to consider and try first were greatly appreciated. What a professional! I would never hesitate to use him for ANY car alarm needs whether it be repair, install, removal, or advice. A guy like him is unparalleled and greed is not a driving factor with him. Its refreshing to know there is a market professional who is willing to help the average person in this world. My advice is to highly consider this man for your vehicle alarm needs! Daren read more

ONSITE AUTO ALARMS REVIEW 6-14-17 Cooper (Mr. Ericson), of Onsite Auto Alarms, came to my home to replace a failing alarm system in my truck. He was prompt, courteous and extremely professional. He spent over 4 hours removing and replacing my alarm system, which included a 30 minute tutorial on the new system's functions and usage, which was greatly appreciated. The installation was flawless. When he showed up he had a vehicle which would be the envy of anyone who has any knowledge of working with their hand and tools to make a living. That alone was all I needed to see to know he had pride in his work. He took the time to show me how my old system was installed and how he would install the new system the way an alarm system SHOULD be installed, and the difference was striking. I am as pleased as I could possibly be and I will definitely call him again for any other service I need, as well as recommend him to anyone needing his services. Sure, you can take your vehicle to a shop and have a kid, who should be saying 'do you want that super sized', install a system you hope will protect your vehicle, but you will regret it! Do yourself a favor and call Onsite Auto Alarms. read more

Onsite Auto Alarms is WONDERFUL! They installed my unit several years ago. Last week my car decided to go "Christine" one me - the alarm went off and nothing I did would make it turn off. I found my manual for the system and was instructed to disarm it via the valet switch. I could not find my valet switch and after 30 minutes or so of searching with my alarm screaming in my ears I called the folks at Onsite. Cooper was very patient and calm with me and offered several solutions. One finally worked and he saved the day! I am so very grateful that even years after the installation (and having moved to a different state) he was willing to take time from his work and "save a damsel in distress!" I am very, very thankful! Thanks so much! read more

I was in another state for training and I called On-Site Alarms based off of a Google hit. I am very happy that I had him install my alarm. There were alot of other installers I was looking at and I could not seem to get answers. I spent 5 minutes on the phone with Cooper and he knew exactly what system I needed. I told him I need auto start, alarm and a two way. I used to be a tele comm installer so I know what its like to be an installer. He did a great job and installed below what best buy would have charged. Oh and also I was in another state and I by accident programmed my keyfob to some sort of valet lockout thing and he talked me through the whole troubleshoot process...Tech support..I think yes!!! stop looking read more

When I called On Site Auto Alarms, I was really surprised toe find out they actually do come to you and not the other way around and the the best thing is that you don't pay extra for the added convenience and service. The work done by Cooper in the installation of my car alarm system was very professional and courteous. he took his time to make sure the work was done similar to a factory setting. He even spend additional time fixing a problem I wasn't even aware was an issue, that had nothing to do with the installation of the alarm system. He fixed the dome light because he noticed the wiring was coming apart. I highly recommend On Site Auto Alarms for all of your auto alarms/audio installation needs. Manny read more

My wife purchased a Z3 that had no alarm system and we located Cooper through an internet search and was impressed by all the positive reviews. We spoke to Cooper on 4/2/15 and after he answered all the possible questions we could think of, we scheduled him on 4/17/15 to install an alarm system in the vehicle at our home. He arrived as scheduled and did a great job of installing a system that even exceeded all our needs. He is very customer oriented and made sure to go over all the features with both of us to make sure we understood how it works. Cooper does a very neat and thorough installation and we are very happy with the results. I would be glad to refer anyone to Onsite Auto Alarms! read more

I'm a A.S.E certified mechanic that cant do the things I use to .It is very hard to find someone who will do the job as good as or better than you .Someone who will treat your stuff as it was his .You need look no further Cooper is the man for the job . The alarm that was installed had 52 wires .Every cut every crimp and tape over was 100 percent . No long wires tied together or bunched up .His workman ship was the best I have seen in the trade .If your looking for someone to do your install and have it look like it came from the factory . You need to call Onsite Auto Alarms . Aka he does car stereos as well .Thank you Cooper for your outstanding work on my 2006 Tundra . Dale read more

Needed a mobile service to do a new truck alarm in my Dodge Ram. Contacted Onsite last week and made an appointment. This guy is so professional. He confirmed our appointment the day before. Called when on his way. Showed up with a very well equipped van and installed the new unit within 2 hours. He took the time to explain what needed to be done and then went to work. Was very good at explaining all the features and programming the new unit exactly how I wanted it. Cleaned up the work area and left me with a great working unit. Only wish I had found this guy years ago. Will be calling him back to do a new audio system. Cooper is the man! read more

Called and spoke with the owner Cooper. He was EXTREMELY informative and answered all my questions regarding my install. His pricing is great, I've checked around, but the installation was impeccable as well as the price. Just when the install was about to be finished, he called me and I came out to my truck and looked at the professional install...everything looked FACTORY...no loose wires or nothing. This was a great install and I highly recommend his experience! 30+ years of it and it SHOWED. He installed a Compustar 2w-9000 for my 2014 Tundra. Did I mention he is mobile? That was a huge plus! Thanks Cooper! Dan read more

Too bad 5 is the highest, he deserves a perfect 10 It can not get better then Cooper. I did not have an alarm system installed, but a few other items. A fwd/bwd dash cam built into the rear view mirror and a backup cam for my Garmin. He took care of us on a Sunday morning, service was very fast, everything looked and worked great. Showed me as work was being done on how it looked and how all he did worked. Price quote was amazing and with a life time warranty. You can not beat this. Any work needed, make sure you talk to this guy first, you will not be sorry. read more

Cooper has installed a number of alarms in different vehicles for us over the last several years. He is a great guy to work with, always does exactly what he says he will and does terrific work at a very fair price. He takes great pride in what he does, showing off his wiring and installation work that looks as good as what came from the factory. I've called him weekends and evenings with questions and he always answers the phone personally and takes the time to make sure I am happy whenever I call - try that with a big box store! read more

Cooper went the extra mile to complete my installation. I was very impressed with his dedication and professionalism. My previous alarm was installed incorrectly with inferior parts and methods. Cooper showed me the mess under my dashboard and corrected every issue. His installation is a work of art and I could not be happier! Cooper also followed up with a call the next day to see if there were any issues. I would highly recommend Cooper to anyone looking for a trouble-free alarm installation. read more

Great service and highly recommended if you need an auto-alarm installed/replaced. Very professional, on-time and great prices. Cooper is very knowledgeable and took the time to discuss which security system option was best for me. Installation was conveniently at my home and was cleanly integrated into my car's system. No hanging wires or spaghetti wires after he was done with the installation. As a bonus, I was able to support a locally owned and operated business. read more

Onsite Auto Alarms has been in business since 1991 in Phoenix. I met the owner when I used to live in Phoenix. His after hours emergency service helped me out of a jam. My Viper car alarm went off and wouldn't shut off. Cooper, the owner, came over right away and disconnected my alarm. Since then, he's replaced my cheap Viper with a cool CompuStar alarm. I love it. It's 10 times better than my old alarm. read more

Cooper has provided great service, especially the car alarms, to the vehicle fleet that I am responsibile for. He always willing to answer any question that I and vehicle operators have regarding alarms and after market equipment. A security system was installed on my daughter's car because of Cooper's quality of work and trust that he provides. HIGHLY RECOMMENDED FOR ANY AFTER MARKET WORK FOR YOUR VEHICLE. read more

I've been researching around, looking for a knowledgeable installer. Cooper Show that he is good, and very professional on what he does. Install was long, but very detail. Product advise is perfect. I was originally going for a Viper, but opt out on getting Compustar. The Device was perfect, install was perfectly match. If you looking for a new alarm system. Please go to Cooper. read more

Cooper is definitely skilled at what he does. His installation is probably the highest quality I've seen. I have had other alarm installations done and they were not the best and in comparison to what Cooper did they were horrible. If you are looking for someone who is very professional and knows what he is doing and has great alarms ... THIS IS YOUR GUY. By the way... I rarely do reviews. read more

Superb, quick, responsive service-and what was even nicer was that I didn't have to drive all over town; he came right to my home in Apache Junction and resolved the issue I was having with my car alarm and gave me some very valuable information that even the dealer didn't/wouldn't give! Very well worth the cost of the call! I can now drive my car with peace of mind. Thank you, Cooper :) read more

I had an alarm system installed by cooper today and I must say.... WOW!! Cooper is very professional and very experienced in his field of work. He took his time and did everything right. He worked quickly and efficiently. Clean job and very happy with the outcome. If your hesitant with calling cooper, don't be! His work is an A+ and I would recommend him to anyone. read more