if you need to build a car trailer this will help

[Indycars]

I'm wondering how important seamless sides are when thinking about leaks, this would include riveted sides???

https://oklahomacity.craigslist.org/tro/d/oklahoma-city-85x18-enclosed-carhauler/6954920589.html

How hard is it to add wiring to the interior such as lights after the trailer is built???

Related to the question above about wiring, what kind of things are best done when the trailer is built???

Can the electric tongue jack and/or winch be added later without extreme difficulty ???

 

[Grumpy]

having added powered, winches and interior lighting and tail/signal lights too several older existing trailers,
ID say its not very difficult

http://garage.grumpysperformance.co...uble-shooting-trailer-lights.4863/#post-13361

http://garage.grumpysperformance.co...an-use-a-car-transport-trailer.845/#post-9228

Inventory | Raskull Supply Co | Truck Bed & Trailer Dealer | Trailer Sales Near Me

View All Truck Bed and Trailer Inventory. Browse your options for trailers for sale and truck beds on this page and call us if you need any help with information on utility trailers, equipment trailers, dump trailers, or even gooseneck trailers.

www.raskullsales.com

use the correct connectors solder connections and use a color code chart,
I generally use 10 ga wire and solder connections and heat shrink tube insulator sleeves,
work out the connection diagram on paper before you start,
use a multimeter

Just a tip when using shrink tube, as a protective cover,
over wires leaving an electrical socket or sensor,
Ive generally found adding some silicone sealant,

on the electrical connection to wire exit areas, to the area the shrink tube covers is a good idea to further reduce moisture damage

http://garage.grumpysperformance.co...-wiring-for-a-tbucket.10038/page-6#post-47314

http://garage.grumpysperformance.com/index.php?threads/heat-shrink-tubing.1443/#post-28050

https://www.malcolms.ie/towbars/information/towbar-electrics-wiring-diagrams

https://www.myteeproducts.com/3-4-h...MIr-6yuaiq6QIVD6_ICh0DOA9DEAYYBCABEgJ4JPD_BwE

https://www.amazon.com/Forged-D-Rings-Trailer-Tie-down-Ring-27011/dp/B011H9FRG4

I've generally welded and bolt-on d-rings with grade 8 bolts
to the trailer to secure safety chains
and yes looped thru and secured with 1/2" thread links

https://www.dccargomall.com/3and4-f...MIua79j6qq6QIVQQiICR3SygB2EAQYAiABEgKQyvD_BwE

https://www.dccargomall.com/1-2-d-ring-bolt-on-clip-gold-colored-zinc.html

and use two of these to anchor the chain to the bumper
https://www.lodimetals.com/34-steel...MIqfSvxKmq6QIVi7bICh2kWgJhEAQYASABEgLx6PD_BwE

 

[Indycars]

having added powered, winches and interior lighting and tail/signal lights too several older existing trailers,
ID say its not very difficult

I hadn't thought about it, but most trailers have an open ceiling, so it would be easy to run wires
there and drop down into the wall where the power is needed.