90463123 is that the part i need ?
Im not very good at electricery getting a bit confused as where to start . Cant it just be spliced into original wiring at the back , why does it need a relay/buzzer and stuff
You NEED a 4 pin flasher relay instead of the 3 in already fitted under the column
But the the 'relay' above is a nice to have so you can tell if your brake lights work while towing but, if you pick up the brake light feed at the socket in the boot (yellow/black
) it needs to have the relay fitted up front for the trailer brake lights to work OR you can bridge the relevant connections in the base where the relay would fit to give a feed to your trailer OR pick the trailer brake light feed up from one of the car's brake lights.