The wiring on right side signal is just slightly more annoying to work with, but it's not a big deal.
On the right side signal, the blinker wire with the resistors has a little loop separated out from the neutral and running light wire, which are very short - shorter than needed for the FJ. If you want to keep the resistors in place, you can't cut the blinker wire down to match the length of the others. This just means that you'll need to make up for the shortfall and differing lengths on the connector side of things. Need to measure carefully so that once spliced everything comes out to the same length overall.
On the left hand signal, the wires are all routed together and there's plenty of extra length versus what you need for the FJ, so you can just cut all 3 wires at the same spot on both the signal and connector side of things and not worry so much about everything coming out to the same length.