Originally Posted by TreyBo
So let's say the horn (constant) and the ignition?
Horn will work for constant. Ignition would be best if you can find the factory wire but, indicators can work but the fuse may need to be sized up. I have done this before in the past and have had no issues but not sure how correct it is. Whatever you tie to, if the fuse isn't rated properly, you will lose it if the fuse pops.
But I stress, find and use the correct factory wiring.