Wiring Question

[BertMac]

1970 C10 6 cyl powergllide no A/C
Ok I have two wire I don't know where they go.

Passenger side of tranny up close to bellhousing area there is a switch with a (black, maybe brown) wire coming of of it. Where does it go?

and there is a relay on the firewall by the heater bow that has 3 wires

Red- 12 volts
green- idle stop selonoid
Blue-?????????????

So where do the (Black or Brown) from tranny do and the Blue wire from the relay go.

Thanks
Bert

[3 on the tree]

On my 70 6 cyl K5, I have the same relay. The blue wire goes to the main plug on the back of the fuse panel. Looking at the plug, second wire from the top, drivers side. Hope this helps, also the red wire actually passes thru the firewall and connects in the middle of the fuse panel, just above the radio slot.