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You are right about the battery being the possible culprit. Other folks suggested this also.
After more battery checks, it was determined the battery was not holding a 12+ VDC charge, dropping to...

OK, more input. The R3 relay (main accessories and engine), left side of the Frunk, often chatters when the key is turned to the ON position.

I disconnected and reconnected the battery terminals....

Thanks for the link.

Yes, the Big Bike power and ground wires are connected directly to the battery
All was working properly at the output of the harness before I connected the trailer.
The trailer has 5 wires, same...

Question responses:
1. With the ignition ON, and the trailer wiring was connected, I was verifying the trailer lights were working properly.
2. Yes, the trailer was connected. I was checking the...

Any recommendations on good 2015 Spyder RT Service Manuals?
Thanks.

Thanks for the diagram.

If memory serves me, it was the trailer "running light" wire that I grounded (connected to common).
I installed the Big Bike harness for the 2010 & later Spyder RT.
The outputs of the wiring...

Also, some indicators and panel lights initially bounce around, then most go dead.

Good point, thanks.

I had previously checked all the fuses in the "Frunk", and they all look good. Not blown.
Comments?

Which fuse is the main power to the electrical system?

2015 rt

Fuse is in the trunk?

While working on the trailer wiring harness, I inadvertently shorted the Spyder power wiring to ground.
When I turn the key to the ON position, nothing happens. There is no power to the operating...

When wiring my trailer, and testing the right side turn signal. I inadvertently shorted the positive wire from the Spyder to ground.
Everything on the main panel went dead. And, when I turn the key...

RICZ,

OK, thanks.

What is the best glue or epoxy to use for those squarish panel tabs with the threaded screw fastener that seem to break off pretty easy?
Thanks.

Understand, thanks again.

Joel,
I understand what you are saying. I plan on going with the proper harness. Was just curious as to why a harness was necessary.
Regarding the trailer: the turn signal lights are single...

Joel;
Why not just splice into the Spyder wiring for the turning signals, running and brake lights?
I noticed the Spyder left and right turn signal wiring are different colors. Wonder if they have...

Hmm? My trailer has six wires, one pair for each turn signal and a pair for the stop light. There is no wiring (yet) for the running light. There is no light fixture for the license plate.
Thanks...

Does anyone have a color wiring diagram for a 2015 Spyder RT.
Want to wire a plug from the left & right turn signals, and the stop/running lights for my trailer.
I need to know what the different...

Did not see the 165R60-15 on Amazon. What tire vendors do you recommend? Thanks