Does The Demco DA75 Trailer Brake Actuator Have An Electric Lockout?

Question

Question:

Does this have electric lock out? Some of the QandA says no, but the main product description says yes!

asked by: Edd

0

Expert Reply:

Hey Edd, thanks for reaching out. Yes, the Demco DA75 Trailer Brake Actuator for Disc Brakes # DM33CV does indeed have an electric lockout. The solenoid has two wires coming off it which are the reverse lockout wires mean to hook up to the vehicles reverse light circuit. The actuator also says right on the top "Brakes not effective in reverse". Sorry for any confusion. I will work on getting those conflicting q/a pages corrected.

What kind of trailer will you be putting it on?

expert reply by: Jesse M

0

Demco DA75 Trailer Brake Actuator
(click to enlarge)

Edd

9/25/2026

Jesse - great news and thanks for confirming so fast. It'll be going on my single axel boat trailer and should do the job nicely.

Jesse M.

9/25/2026

@Edd Awesome! Glad to help. Let me know how the install goes!

Answer 1

Great question, Hannah, and welcome to the world of boating and trailering! Since the Demco Disc Brake Actuator #DM33CV does have an electric lockout, you'll be all set. It just has a solenoid with 2 wires that get wired up to a reverse circuit…

view full answer...

Answer 2

Good question, Carla. This version is zinc-plated only, without a secondary powder coat layer. That zinc finish is strong on its own and helps prevent corrosion, especially in freshwater or light salt environments. Most brake actuators are either raw…

view full answer...

Answer 3

Hello Bob, thanks for reaching out. We have a few option for locks that will fit the Dexter DX7 coupler. For a locking pin I recommend the etrailer Surge Brake Coupler Lock #e98888. This will allow you to lock the coupler to the ball. The picture…

view full answer...

Answer 4

Hello Charles, I can definitely point you in the right direction. The 3,250 lb axles SHOULD use the same bearings and seals as a 3,500 lb axle. It does kind of depend on when the trailer was made though. Some older trailers may not necessarily use…

view full answer...

Answer 5

I will answer you second question first. The difference between the three Kodiak Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2" is the rotor finish. The differences are as follows: part # K2HR35D, has a Dacromet coated hub-rotor part…

view full answer...

Answer 6

Hey Matt, thanks for bringing this to our attention. Yes the mounting hole dimensions of the Demco DA75 Trailer Brake Actuator for Drum Brakes #DM33CV that you referenced are separated by 3 inches horizontally and 2.5 inches vertically. Do you have a…

view full answer...

Answer 7

Hey David, thanks for reaching out. The Dexter Premier Disc Brake Kit #T2HRCM10DAC will work for you, provided your EZ Loader trailer is equipped with a standard 3,500 lb axle. There isn't a way to look up that information using the VIN, so…

view full answer...

Answer 8

Dan, you’ll want to use 1/2" x 4-1/2" Grade-5 or higher for a secure mount. They aren't included, but you can find them at any hardware store. The mounting holes on the Demco DA75 Brake Actuator #DM33CV are standard size for bolt-on…

view full answer...

Answer 9

Hey there Lorna. Yes, the Demco Drum Brake Actuator #DM28CV or Demco Brake Actuator Disc #DM33CV will 100% fit your 3" wide 4" tall trailer tongue. Even though the actuator says 3" wide and 2-1/2" tall, it will work because it…

view full answer...

Answer 10

I looked on Demco's website and was able to pull some information and diagrams on how you would mount the Demco Hydraulic Brake Actuator item #DM8609101. I have attached them below. I was not able to find any pictures of this Actuator installed.…

view full answer...

Does The Demco DA75 Trailer Brake Actuator Have An Electric Lockout?

Product Page this Question was Asked From

Continue Researching