Should Black Wire from Brake Controller Have Constant Power

Question

Question:

Is the black wire for the brake controller a key on 12V or constant 12V?

asked by: Jared

0

Expert Reply:

The black wire from a trailer brake controller will either be routed directly to the positive post on your vehicle's battery if hardwiring the controller, or to the 12V power pin of a factory brake controller port if your vehicle is equipped with one. Either way, the black wire will be connected to a constant power source, which is hot whether or not the vehicle is on.

With this in mind, you do not need to worry about the vehicle battery draining from this draw, as the LED from a brake controller requires such little power that it would take an extremely long time for a controller to drain a battery. Most brake controllers also go into a sleep mode after a certain period of time.

expert reply by: Chris R

0

Answer 1

The only pin that should be continuously showing 12V power on the 7-Way connector on your vehicle is the 12V power circuit which is normally the black wire but not always. In 7-way wiring the 12V auxiliary power feed is carried on the contact at the…

view full answer...

Answer 2

No you should not have constant power on the brake output pin, the blue wire should only have power with the brake pedal depressed in the vehicle or the brake controller manual override is activated. If the blue wire has a constant 12V then it is an…

view full answer...

Answer 3

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…

view full answer...

Answer 4

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

view full answer...

Answer 5

The AL-KO trailer hub part number 8700 that you have is a 3,500 lb trailer hub/drum with a 5 on 4-1/2 inch bolt pattern. Based on that the #AKHD-545-35-EZ-K is the correct fit and would work great.

view full answer...

Answer 6

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

view full answer...

Answer 7

You will need the Red LED Trailer Clearance or Side Marker Light #328-K-52 or Amber LED Trailer Clearance or Side Marker Light #328-K-51 for your 2018 Forest River Sunseeker motorhome. These lenses have the same Top Command SAE-AP2-16 markings on the…

view full answer...

Answer 8

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

view full answer...

Answer 9

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

view full answer...

Answer 10

The 7290 that you see is a casting number. It is found on AL-KO hubs that fit #99 spindles. I found that the bearings used are #28580 which would be the inner bearing and #25580 which would be the outer bearing. For the seal use #91030.

view full answer...

Answer 11

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

view full answer...

Answer 12

The B&W Companion OEM 5th Wheel Trailer Hitch #BWRVK3700 is perfectly compatible with cushioned pin boxes like your MORryde RP072-1621HD, so the clunking you're experiencing isn't related to the two components being incompatible. With…

view full answer...

Should Black Wire from Brake Controller Have Constant Power

Product Page this Question was Asked From

Continue Researching