Here is the entire DIY trailer build, all the parts 1 through 5.

PRODUCTS USED
:
EZ coupler Hitch: https://amzn.to/3khbzzW
solder connecters: https://amzn.to/3n9blga
Hydraulic powerpak: https://amzn.to/30W4mhQ
LED tail lights: https://amzn.to/3l8khkT
Button lights: https://amzn.to/2SloZzr
Solder seal connectors: https://amzn.to/30vdkCG
VALSPAR catalyst\hardener: https://amzn.to/2CvaPUX
KRYLON catalyst\hardener: https://amzn.to/2FnMXmN
Reducer: https://amzn.to/32GZb4d
Mix cups (bulk): https://amzn.to/2DjTi5J
Mix cups (bulk): https://amzn.to/31hH6KK
Mix cups (12pk): https://amzn.to/39VmJ9V
Acetone bottles: https://amzn.to/2JzqxEr
Filter mask: https://amzn.to/2FnGLLu
Logging tape: https://amzn.to/30eTkEe
Fatmax: https://amzn.to/2FeiQ5a