Keyless entry keypad installation tips

With just the single two wire actuator correct? The easiest way would be to change the door switches so they go to the box and use it for the control. I think the way it works though is that one press of the added trigger switch they show connected to the brown and white wires locks and then you press again to unlock. At least that is what the wiring suggests. Maybe test that as well. If that is how it works it might be possible to use the current door switches.

Okay, since it works without the 5 wire it must use reversal inside the box. That is the same method the OEM uses. To test this you could connect the new box to power, disconnect the right hand door switch and use some pins or clips to connect the blue wire that would go to the kits actuators to the pink with black stripe wire from the switch, next connect the green wire to the pink with orange stripe. With the control box connected to power you should be able to lock and unlock the doors now. Do not touch the left hand door switch, it could send power into the circuit and blow the controller. This will test if the new control box can control the door motors. If this works then we will need to figure out what you would like for the door switches.

Okay, that means the control box cannot handle the OEM actuator current draw. That will make it a lot more difficult because of the way the polarity has to reverse to make it work.
Connecting it to the other wires still gives it the same amount of current draw and the same problem. Even splitting the door locks and connecting them to separate outputs won't change the total load on the box. At this point about the only way to use the unit you have would be to install the actuators that come with it and not use the OEM door motors. Not what you wanted but about the only way that unit would work. Adding relays won't work because of the polarity reversal needed to make the locks work. The signal out of the control box flips but a relay would still only turn on and off. Sorry but I don't think that unit will work unless you mount and use the actuators that came with it.

The new ones would connect to the rods that go to the interior lock knobs. The OEM units wouldn't be used.

Good to hear you got it working, are you using the OEM locks or something else.
Yeah, start a new thread for the horn. We like to keep the various problems as separate items.