The LED light bar arrived in the mail about noon today so I installed it on the trailer. The temps outside went up to 83F so it was more than comfy working in the garage.
I discovered a number of issues from 2 owners ago during this install that I had to fix. One I already mentioned above... the tail light wire had pulled out of the terminal.
Removing the old LED bar went easily. 2 wires pulled from the terminals and pull the bracket for it off the trailer. It was mounted with double stick tape.
I mounted the new LED bar with 2 M6 bolts and nylon lock nuts and M6 fender washers. I cut a 1" x 1" angle aluminum to length and filed the edges and corners smooth. Then drilled 4 holes in the aluminum and 3 of those holes also in the trailer body. 2 holes through the aluminum and trailer for the mounting bolts. 1 hole for the LED bar wires to pass through from the LED bar. And another smaller hole in the bottom of the angle and trailer for the wires to pass through into the trailer. I cleaned the mounting surface really well with some 91% rubbing alcohol and after that dried mounted the LED bar to the aluminum using the 3M tape on the LED bar. Then bolted the aluminum and LED bar onto the trailer.
I had already pulled the rear tail light covers and assembly off as well as the inner courtesy light fixture that is inside. I threaded the LED bar wires through the mounting hole into the trailer and then ran them behind the courtesy light fixture and out the hole for those wires to the space where all the wires are connected to the terminals. I stripped the wire ends and put them in the appropriate terminals for each function. While I was in the wire space I repaired the damage from the blue 3M crimp connector by totally removing that short length of wire and replacing it with new wire. That crimp connector did cause a few strands of the wire to be cut as was mentioned in previous posts here. So I feel much better about that connection since it was on the brake lights wire.
After all the connections were made I put it all back together. I then pulled the trailer next to the bike and plugged it into the trailer harness and turned the bike on to test all the lights. I was wondering why in the test ride pictures that my wife took the trailer tail light didn't look very bright. In fact, it was hard to see that it was on at all. That's because it wasn't working at all. I happened to have a replacement bulb so I tested that first. Not the bulb. So I pulled it all apart and started tracing the wires from the back to the front. I noted that the courtesy light wire was connected to a different terminal than the tail light wire but didn't initially think anything about it. I knew that this trailer originally had a 7 pin connection with 2 of those always on (one for the courtesy light I found out and one for an optional 12v socket). One wire behind the tail light assembly was cut and wrapped around the bundle where it passed through from inside the trailer. I also knew the courtesy light did work but didn't associate that fact with the wire connected differently than the tail light wire. In a 5 pin trailer connector as is on the trailer now there are ground-tail-left turn-right turn-brake wires in that order. But as I said it just didn't register that the connections in the back of the trailer were 6, not 5. And then it did hit me.
The carpet in the bottom of the trailer inside is attached with Velcro to be able to pull it out easier for access to the bolts and wires running under it. So I pulled out the carpet looking for where the 7 wires were changed to the 5 wires that were at the front trailer plug. Turns out that was right up front at the plug... wrapped in a few layers of electrical tape. I unwrapped the tape and looked and what color wire was changed from the colors on the plug. Turns out the courtesy light wire was connected to the tail light wire from the plug and nothing was connected to the tail light wire at the terminal. So I changed what terminal the tail light wire was in and tested it all again. Everything worked as it should. I was really hoping it wasn't a broken wire someplace but when I saw what 2 wires were disconnected at the front plug I knew where the problem was. All is working perfectly now.
As a finishing touch I injected a bead of E6000 cement sealer into the holes the LED bar wires were routed through to keep moisture out. Now I feel much better being a lot more visible at the back of the trailer. And if the vehicles behind me can see both flashing brake light bars all the better. But at least they WILL see one flashing brake light bar and I have an extra tail light as well that I didn't have before.
I didn't think to get any pictures of this work along the way but I did get the finished work.