Jorge Rivera "Honda Service Advisor" Plaza Automall Service Dept Requesting a diagnostic fee prior to releasing the new car brooklyn, New York

It is still not clear what caused the fuse to blow. A properly installed alarm system will grab it's power sources directly from the ignition harness, and have it's own independent fuses.

The reason for concern is, if it is not determined what caused the fuse to blow, the problem can occur again. As well, what caused the fuse to blow, will determine who is responsible for the original diagnostic fees. Why the first dealer you brought this to did not check the fuses is beyond me, but as I stated they often fear any electrical troubleshooting and if they see any aftermarket product(s) have been installed will generally assume this was the cause of the problem rather then perform any actual diagnoses.

What caused the fuse to blow? As Ronny stated, the alarm SHOULD be wired into the ignition/fuel circuits. It may be the cause of your issue if it's hooked up wrong. I cannot imagine purposely wiring the alarm into the A/C circuit, but who knows? 

The circuit that failed is very unusual. I suggest having the dealership that replaced the fuse dig deeper and find the root cause of the circuit overload. If you don't, you will probably find yourself in the same condition.

At the very least, buy a spare fuse assortment and toss it in the glove box. When you lose electrical power to anything, check the fuses, and replace it yourself. You'll save yourself alot of grief. Then, have that circuit checked out at your earliest convenience. 

Update.

I took my vehicle to Honda in woodside, they called me the next day to state the repair was complete. When i got there the repair was n/c because it was under the warranty. The problem was a blown fuse. I requested the fuse be taped to the paperwork as proof for Plaza Honda in brooklyn.

I stopped by Plaza Honda and spoke to the night manager in regards to the diagnostic charge. I requested that the charge be reversed. The night manager took my paperwork to the back of the shop. Returned 10 minutes later and stated that i can get a FREE tire rotation at 8,000 miles. When i told him i wanted my money back because the car was not properly diagnosed. He went to the shop again, when he returned he stated that nothing can be done by him. He stated that Woodside Honda did me a favor because I did purchase the vehicle from they. Favor my a*s, i paid for bumper to bumper warrenty service. I needed to come back to speak to the service advisor that took car of the car. That was a lie by the night manager.

I tried to contact him the next day but he was not reachable. I will stop by in person to speak to him. This is horrible. The service tech should be repremanded. I wonder how many people got screwed by Plaza Honda? 

For the dealer to blame something unrelated just because it was installed aftermarket. In the meantime, if you want an alarm installed when you purchase a car, they outsource the job and have..you guessed it, an aftermarket alarm installed. Difference is,the dealer marks up the price hundreds of percent.

Now this is not to say an alarm install can never cause problems because it could be a hack job. But an alarm, if installed properly would have nothing to do with the AC, mirrors, seats or back up camera. The alarm does not tap into any of those circuits. Power, acc, ground, parking light and door switches, doorlocks and perhaps a starter interrupt is typically all that is connected, a Honda is not a difficult vehicle to put an alarm into by a pro installer and millions of alarms are installed a year without it causing problems with other circuits in the vehicle, hence most alarm installers offer a lifetime warranty on the installation.

In a nutshell, the dealerships do not like you to have anything installed they make no money on, and they are often simply too lazy to actually check for the real problems, it is the easy way out for them to blame an alarm or stereo then warranty anything and actually have to do some work. They fear what they do not understand, which is basic electronics.

Note there is a Federal Law that most likely the dealer is aware of called the Magnuson-Moss Warranty Act (P.L. 93-637), which states it is not legal for the dealer to void any warranty on the vehicle, unless it is PROVEN that the aftermarket device or it's installation caused the problem. Do with that information what you will. The only "loophole" or way the dealer or manufacturer can threaten to void a warranty due to an aftermarket product being installed, is if they offer it free of charge. I doubt Honda is going to give you an alarm system free of charge that is equal in features that the aftermarket alarm is..never seen that done before.

Apparently the alarm tech checked it, as well as the original dealership and it is a defect in the vehicle not due the alarm. If you paid anything for this diagnostic you were ripped off.