New harness problem

I think my starter relay gone bad. Now I got zero volts at the relay from where the brown wire goes down to the starter and zero from where the yellow one goes to the ign.

I took it apart.
Inside there is a thin (as sewing thread) red wire rolled with the beginning and end attached to where the yellow wire and the neutral safety switch connects. This wire has a black mark ( burn mark?) close to each connection.