thinkin about pickin up an aftermarket unit.. Car has factory security system that works great. Any documented install guides? i seen one on a S4 TII but not sure thats same for S5?

 

You just have to go to the wireing diagram for the S5. Most of the connections we need are at the cpu. remember to make really good splices or you will have problems

Not nearly as easy as wiring up an s4. On that you can just splice right into the stock alarm plug, damn s5 does everything win the cpu