Blower relay wiring

[red70vette]

I am troubleshooting my Heater A/c system and I need to know what the wiring connections are on the Blower relay that is mounted on the passenger side firewall.

There are 4 wires connecting to the relay. A black wire that is connected to a tab that stands alone. The other three wires are held together by a plastic fitting. The three wires are orange, purple, and green.

I need to know how these connect to the relay. The plactic fitting is long gone on my car and I can't tell from the wiring diagram what terminal each wire connects to.

 

[red70vette]

The green wire is of much smaller gauge then the orange or the purple. It could be dark blue but it is old and faded.

I want to make sure I get this right. When you look at the T is the top left the terminal nearest the firewall?

Thanks for your help.