87 mustang door locks

First off my car is an 87 mustang GT, I have a Viper 5900 alarm system on... My problem is that my cars door lock actuators hasnt been working for awhile so I bought universal ones at an alarm, I just hooked everything up and worked fine for like 5 days to a week and stoped working.?? I opend the case and the motor was burnt... SO do you think it is because the door lock pulse is set to 0.8 seconds?? should I lower it to 0.4?? dunno any help.

What type of actuators did you buy. 2 wire or 5 wire. AND...did you wire them up with relays, and if so, how did you wire the relays?

I got the two wire actuators... The door lock wires (not the actuators) are wired up with 2 relays (5 Wire Alternating 12 Volts Positive Door Locks), the diagram I followed on this site https://www.the12volt.com/doorlocks/page3.asp#arp

ok, so I checked the ireing with a meter...  k, when you lock the door it shows about 6 volts, but when locked it shows a constant 28.3 volts??  Did I do any thing wrong with the wireing of the relay??

can anyone help. I have gone through 4 actuators now and they all stoped working or burnt? I changed the fuse in the 5 Wire Alternating 12 Volts Positive Door Locks relay that I did, and also change the door lock pulse to 0.4 from the original settings? would I need a seperate relay or something, I am really stump on what else to do??

Unless your car is plugged into the wall or something 28 volts is physically impossible. You might want to check your meter. Should be on DC volts. Second, are you replacing factory actuators or aftermarket. If they were factory, just tie them into the factory wiring.

they are aftermarket actuators, the factory ones were gone along time ago.... it actually getting 12volts lock/unlock but ill double check....

they are aftermarket actuators, the factory ones were gone along time ago.... it actually getting 12volts lock/unlock but ill double check....

k i checked it out and it gets 12.7 un-locked and 12.7 locked... but I still dont get why it would burn my actuators? I know when it locks it stays 12.7 for like a couple seconds right??

anyone know what els i can do??