How Do I Hook Up the 2 Wires on My Dexter DX7.5L A-60 Brake Actuator w Electric Lockout?

Updated 09/29/2025 | Published 04/18/2025

Question:

My old brake actuator only has one wire. This one has two. Do you have a wiring diagram for how I am supposed to connect the two wires? Thanks

asked by: Mike J

Expert Reply:

Hello Mike,

Your old brake actuator only had one wire because it grounded through the trailer frame, which was pretty common back in the day. Your new Dexter DX7.5L actuator # DX89FR has two wires coming off the electric lockout solenoid no worries, it’s super simple to hook up. The blue wire connects to your reverse light circuit (usually the center pin on a 7-way plug), and the white wire just needs to go to a good ground on your trailer frame. That way, when you shift into reverse, the solenoid kicks in and keeps your trailer brakes from locking up while backing up.

Let me know how the rest of the install goes. What kind of boat trailer is this going on?

expert reply by: Kate F

7 Way Connector Wiring Diagram
(click to enlarge)

Kate F.

9/26/2025

Hi Mike, Did you get a chance to connect the wires on your new brake actuator? I'm curious to know how the installation went and what kind of boat trailer you're working with. Your experience could really help others with similar setups.

Mike J.

9/26/2025

@KateF Yes, working fine. My trailer is an old trail-rite trailer. Boat is a 2004, so at least that old. Thanks

Kate F.

9/29/2025

@MikeJ Thanks for the reply Mike! Glad all worked out. I also have a 2004, it's a Ranger and we just had to put a new engine on it.... ouch! But at least we don't have to worry about it acting up during the bass tournaments we fish.