1988 ford ranger XLT reg cab ignition switch wiring.

[Louisiana88ranger]

Question about what my blue wire with a white tracer is for one my IGNITION switch. I have all the other wires tied in and the truck starts but not sure what this wire is for and can’t find any diagram that even shows this color wire for this year. Any and all help would be needed. I can also take pictures on things for reference.

 

[bobbywalter]

dont remember....buzzer maybe. whats it do on the meter?