2005 ford ranger remote doorlocks

I am in the process of installing a Prostart remote starter in a 2005 Ranger. The remote start worked great as although all documentation kept refering to transponder security, it worked without any bypass kit. I suspect this vehicle does not have it. I am now at the doorlocks portion. I have located the pink / YELLOW lock and the pink/green unlock wires at the bcm. The remote has two wires that put a 500Ma negative pulse on the lock/unlock lines. When I attach these wires the doors do lock and unlock. What I am curious about is the starter documentation refers to using relays for the unlocking and locking with wiring dependent on whether you want negative or positive pulse. So do I actually need the relays or is it alright to hook directly to the vehicles wiring from the remote starter? Any advise would be greatly appreciated.

Thanks in advance

Just putting a diode anywhere along each of the two wires should be ok? Thanks for the advice.

Bands away from the bcm!