Building a Trailer

cleo101

Member

Equipment
New Kubota LX3310
Dec 4, 2015
39
0
6
55
Thorndale, Ontario - Canada
Hi guys, I am building myself a small trailer and I was wondering if any of you out there are good with trailers :) my question is this :

I'm using a 4 way connection plug and I've now wire the whole trailer but before I hook up the 4 way harness to my wires I wanted to test them with a battery pack so what I did is ground my battery pack to the trailer and I than proceed to test each wires.

I touch the yellow one and the left light came on, which should be ok, than I touch the green wire and the right light came on which is ok too, but when I touch the brown wire all the lights came on (side markers too) but for some reason the left one didn't ??

so I guess what I'm asking, is this OK still I know once the 4 way plug is hook up to a car or truck that power might go to more than one wire at the time but for testing purpose only if I want to test the trailer by testing one wire at the time are my result OK ? I'm wiring this trailer for a friend so I don't have a car to test it right now.
 

bcp

Active member

Equipment
BX2360
Apr 20, 2011
644
77
28
SW WA
Especially in bright daylight, it is easy to get mixed up on whether it is a tail or turn light that is lit.

Almost all trailer light goofyness is caused by poor grounds to the frame. Really good wiring has a ground wire to each light fixture.

The brown wire should have all lights on, but not the bright elements in the bulb for the turn/stop lights. The rear lights should be dimmer when brown is powered.

Bruce
 

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