Headlight / engine wiring issues

If you like working for .50 cents an hour, this can be straightened out but it will take a lot of time. You will have to determine why there are so many splices in it, and then you can re-wrap the whole thing. At this point it would be better to find a replacement, new or used. It is not a good idea to zip-tie spark plug wires together, some separation is best.