add manual switch to aftermarket keyless

If someone could help I would greatly appreciate it. I have added aftermarket keyless entry and aftermarket lock actuators and would like to add a manual switch to lock and unlock from inside the car. Do I need to use relays to do this or can I just use the switch to apply +12 volts to actuators without damaging the keyless unit. Thanks.

I don't have a part number or link for you, but you can buy aftermarket lock switches so it doesn't look ghetto. You don't need relays, you just tie the lock/unlock output of the switch to the ones coming out of the keyless that go to the relay for the locks. This can either be a set of two relays, or a 451m if it is made by directed, which is a black box a little over an inch square. You should be looking for a green and blue wire coming out of the remote start. Green should be lock, and blue unlock. Be sure to test your wires to make sure though.

Thanks for you're reply. My keyless entry unit has the relays built in, I just need to know if I can put a switch in that will send 12 volts to either lock or unlock all doors from in side the car with car running. I don't know if that 12 volts will backfeed into my keyless unit and fry it or if I need to use relays. By the way all 4 doors have 2 wire actuators.

You'll need to use relays most likely unless the switches can handle high current. You could also check the manual for you keyless if there is a lock/unlock input into the brain that will trigger the relays in there.

If you do need to use relays, then you shouldn't need to diode isolate anything since the relays in the keyless are essentially doing that for you.