What is this?

[84_chevy]

I have what appears to be a control modual on the passengers Side mounted above the air control box. It has plug with a blue, yellow, pink, green, white, black and brown wire running to it. It runs to the firewall where it has been hacked to pieces. All that run out the other side in the engine bay are three orange wires. One wire runs to the dizzy, one wire runs to the starter and the last wire is grounded on the firewall.

What is this thing and do I need it? The truck runs the same with or without the wires plugged into the modual in the dash.
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