prebuilt relay box

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My boat has a similar fuse/relay box on it. Not sure of the Mfg. Only issue has been a thin plastic case that I leaned on a little and broke one fine day.
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For that price, I'd imagine the quality of the components aren't great. Cheap relays, cheap terminals, cheap wire (is it even copper or sized adequately?).
 
Seems like it has decent reviews but I see your point. Looks like it has copper in the relay portion. Could easily swap for a higher quality relay and have the tidy box to organize things with. For the price, I might give it a chance.
 
I just bought the same thing from another vendor on Amazon (I think that there is somewhere a full bunch of chinese parts manufacturers that build the same parts on Amazon...). This is the link :relay box
I had a close look to the thing when it came home: looks not so bad. Relays are standard 40A NO/NC, cable size looks OK as long as you don't have more than 30Amps of current.
My project is to work on the lights of my 70 duster, and I am planning to have at least 3 relays wired:
one for low beam headlamps (2 x 55w=110w, so approx 9.1 Amps) fuse will be 16A, cables will be 2.5 mm²
one for hi beam headlamps (2 x 60w=120w, so 10 Amps) fuse will be 16A, cables will be 2.5 mm²
one for horn (might go as well to a air horn?), tbd.
The three remaining relays will be spare ones, maybe some day I will be adding extra headlamps/fog lamps?

Using a relay will ensure that the requested amount of current will feed the lamps with no restriction due to old headlamp switch/poor connections.
The same with the horn (if I use an air compressor): I don't like the idea of having high current inside the dashboard...
 
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Used same setup for my 72 dart to do headlights. Nice set up , wire was copper and enclosure nicely waterproofed. I was happy with outcome.
 
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