XYZCTEMPower Central Lock Kit Car Remote Control Conversion,Take with 2 Keyless Entry-Universal Fits for 2,3,4 Doors Vehicles

Whats the best way to tie this into my aftermarket alarm

Can i get the kit for just a two door car

The battery in my van died. I recharged it, but now the door popper doesn't work. Not even when I use the key to manually lock/unlock?

I found that i didn’t ground it correctly so i fixed that. but now if i try to lock everything it locks and unlocks right after. any suggestions?