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

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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 doesn’t include a lockout, you’ll want to add Demco Manual Lock Out Kit #DM93CV if you want to prevent the brakes from engaging…

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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…

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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…

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Answer 4

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 5

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 7

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 8

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 9

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 12

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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

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