Check if existing axle has brake flange (which is a steel mounting plate). If missing, one can buy the steel flange and get a certified welding shop to weld it on. Many welding shops (even certified shops) won't install / weld a brake flange - because its alignment must be 1000% perfect. If it's missing, be prepared to replace the axle with a brand new axle - that contains electric brake hubs on both ends. Do "price around" because prices for new axles do dramatically vary.
Note: On my one trailer, it was less costly to buy new axle with bundle brakes hubs compared to buying individual hub parts for existing axle. Thus, do price comparisons of both methods before buying.
For good bolt pattern template, surf: http://www.trailercanada.com/pdf_doc...letemplate.pdf
Assume existing brake flange does exist, simply buy:
- Left Brake Assembly
- Right Brake Assembly
- 2 x hubs (with proper bolt pattern)
- Lots of 10 Gauge wiring.
- Electric Brake "break away" switch (for some regions, one must legally have this item)
- Electric Brake "emergency brake away" kit (for some regions, one must legally have this item)
- 7 Pin "molded" plug on 6 ft cable - to attach to Tow Vehicle's 7-pin outlet.
- Lots of PVC piping and junction boxes and plastic U fasteners (to install brake wires under trailer's belly)
Lots of trailer parts at: http://www.etrailer.com/
Do shop around because prices do dramatically vary.
For wiring, recommend STAR design - instead of traditional Linear design. re:
To view brake wiring under a few of my trailers:
Note: Above pictures show its PVC/PEX piping - for 10 gauge wire support.
For good U-Tube video:
Hope this helps.