Ive wired up the loom with the following instructions

Wire to pin 24 & 25


Then the confusing part..

Instructions to wire to the coil are sketchy and ive been told to use the "positive and negative part of the coil" but another set of instructions for a similar loom say "the 12v constant and the switched live" so contadict what the 2 wires to the coil actually are

After wiring up by instructions that the black / yelow was the switched live the black / yellow wire smouldered asif was been shorted.

What actually are the 2 wires on the coil and any ideas what can cause the wire to smoulder like this?
If anyone knows the voltage they should both have so i can make 100% there is no dammage to anything else too?