Black Jack Trailer Jack Harness Kit

For Caravans and Trailers

The Black Jack Trailer Jack Harness Kit saves you time and money by not having to source components when installing your Black Jack Trailer Jack. The ‘DIY’ Harness kit provides the correct protection and process, making your installation a breeze.

  • Easy to install.
  • Minimal tools required.
  • Hardwired for your safety.
  • Permanent connection between the Black Jack and the house battery
  • Prewired to an Andersen plug for simple connection to your Black Jack
  • 30-amp fuse prewired plus battery terminal connectors
  • No.8 B&S battery cable for both positive and negative wires
  • Fully enclosed in a protective cover


4 payments of $15

Leaves our Brisbane warehouse same day if ordered by 12.30 pm.

The Black Jack harness is ideal for a permanent connection between the Black Jack and house battery.

Black Jack diy harness features:
• Suitable for Caravans and Trailers.
• DIY saving you time and money on install. 
• One size suits most applications.
• Easy to install components.
• Hardwired for your safety.



Black Jack Trailer Jacks is a division of Titan RV, a proudly Australian owned family business located in Brisbane, Queensland.

That means you can buy with confidence knowing that you are supporting an Aussie company with local support. Titan RV source 99% of their products from quality manufacturers in Australia and the USA.

We were founded on three core beliefs: Honesty, Reliability and Value which we strive to incorporate into all aspects of our business. These core beliefs are integrated into every product and every sale we make.

We pride ourselves in making available a range of quality products designed and tested for durability and performance, because when you are west of Timbuctoo, you need reliability of your equipment. Customer service is always our top priority.

If you have any questions or comments, feel free to contact us and rest assured that you will be speaking to an expert. 

Delivery & Returns
Black Jack Trailer Jacks is all about legendary service. We offer free and same day shipping.

Not happy with your product? Simply return it within 14 days for a full refund. No questions. Buy with confidence.

Questions & answers

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Alternatively call us on 07 3286 1199. We are here to help you.