Build a Better Trailer Brake and Light Tester with Wireless Control!

This trailer brake and light tester was inspired by @Scottthesigncrafter and the video he created for a similar build. After servicing my bearings, I realized testing the brakes would be difficult without some controller that was preferably wireless, and this build worked flawlessly for my needs. All parts are available from amazon.com, and the list follows:
Nanuk 920 Case a.co/d/2ywvQKy
4-Way Fuse Block a.co/d/9AVzSEn
Ground Terminal Bar a.co/d/5YTcLpm
LED Flasher a.co/d/gspg7QW
Timer Relay a.co/d/iaCMGTU
20 Amp Fuses a.co/d/eHZQMtD
7-Way tester a.co/d/eHZQMtD
24v to 12v Converter a.co/d/3CrQg1A
12v wireless Relay a.co/d/9YMPY4F
Makita 18v Adapter a.co/d/hv5YL2I
7-Way Wire Adapter a.co/d/ea5PxK8

[@jordanthomas2210]

Nice work!

[@DiyintheGhetto]

Awesome build. I would love to build one myself soon. Thank you

[@jakenigh7810]

would love to make one can you make a how two
i work in the RV industry iv seen them set up with switches on the box but not a remote like yours

[@charlesmoderbacher9720]

Love this! I’m going to build one, have parts ordered. Is there a wiring diagram somewhere that you have posted or somewhere else? Thanks!

[@mikecox5700]

I do not have a wiring diagram, however, if you need some photos of the layout with connections, I could send them to you.

[@charlesmoderbacher9720]

@@mikecox5700 thank you, let me get my parts and get started and will contact you if I have trouble.

[@HotBiteKid]

Great job! What did you use to make the turn signals flash?

[@mikecox5700]

I installed the flashers for left and right switches with the flasher listed in the build comment section:
www.amazon.com/dp/B00JXLH7CG?_encoding=UTF8&psc=1&ref_=cm_sw_r_cp_ud_dp_70Q5Z7K29Z2SWDTB4QMX

[@travisbauman297]

Just curious if you would be able to send some up close wiring pictures? I’m looking to build one of these

[@mikecox5700]

send an email to me at: [e-mail] and I can send photos to you.

[@wickedmuffin76]

Did you use the 20A relays because of the brakes, or do the other circuits need 20A? I am wanting to build something similar, but had been looking at 10A relay boards and adding a 20A for brakes.

[@mikecox5700]

Maximum amperage draw for 4 Brakes that are 10 or 12 inch diameter is 15.0 to 16.3 amps at 12 to 13 volts. You should use the 20A for the brakes.

[@ibzanortiz3779]

This is a great tool. I got the parts on Amazon. Could you share the diagram??

[@mikecox5700]

No diagram, however, I could send closeup photos and a different video if it would help: [e-mail]

[@stevensorrels1753]

How did you get your turn signal to come on I have kind of the same set up but my flasher is only a 2 prong I see you have a ground on yours

[@mikecox5700]

Did your flasher come with a wire diagram? You may want to purchase this: a.co/d/gspg7QW

[@user-jo3oe5cy8n]

Do you have any plans

[@mikecox5700]

I have no plans, and if you would like photos and a different video, just send me the request to: [e-mail]