Hi guys i have a 91 N/A and have my self a problem with my alarm,it started couple days ago got up one morning went and start my car as normal everything was good shut it down after about 20 mins an went to lock it and when it was lock my security like will not flash or come on so at the same time it took me keys and unlock it back from the outside the light started to flash and there was a buzzing sound coming from my CPU,turn back the key to the normal position and it stop buzzing and no light flashing check all fuse all is well an good also when i put on my park light on it will start buzzing again is my CPU bad or is it something else any help will be thankful

 

You likely need to replace the CPU board that houses the alarm.

 

Ok thanks alot satch i was thinking that would be the next step appreciate the help

 

here is some wiring guides Foxed.ca - Mazda RX-7 Manuals