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BobbyK · 07-14-2004, 06:13 PM

To answer your question about the 4 "CS" wires.
With a CS alt. here are the wires you use.

The "S" terminal (heavier gauge red wire)-it's the "sense" terminal.It tells the alt. to bump up the output when power demand is high. You can either connect it directly to the output terminal on the alt. or,as in my case, to the power distribution block.

Connecting it to the power dist. block enables the "sense" wire to actually take the reading from where all the power is being drawn from.

The "L" terminal is the Brown/Red wire.This gets connected to the idiot light circiut(alt/gen. warning light).

The "F" terminal is the Brown wire-It's not used.

The "P" terminal is the Brown/White wire-it's not used.

GM actually sells a conversion pitail.Two version though.
One has a "Resistor",the other one doesn't.
The "resistor" harness is used if you DO NOT have a warning light and you HAVE a gauge.

You might be lucky and a local parts store may have that conversion harness as well.I think it's called an "Si" to "CS" conversion harness.

The Delco part number for the resistance wire harnessis #8078.
The Delco nonresistance harness is #8077
Painless Wiring has a nonresistance harness as well.#30707

07-14-2004, 06:13 PM	#17
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	To answer your question about the 4 "CS" wires. With a CS alt. here are the wires you use. The "S" terminal (heavier gauge red wire)-it's the "sense" terminal.It tells the alt. to bump up the output when power demand is high. You can either connect it directly to the output terminal on the alt. or,as in my case, to the power distribution block. Connecting it to the power dist. block enables the "sense" wire to actually take the reading from where all the power is being drawn from. The "L" terminal is the Brown/Red wire.This gets connected to the idiot light circiut(alt/gen. warning light). The "F" terminal is the Brown wire-It's not used. The "P" terminal is the Brown/White wire-it's not used. GM actually sells a conversion pitail.Two version though. One has a "Resistor",the other one doesn't. The "resistor" harness is used if you DO NOT have a warning light and you HAVE a gauge. You might be lucky and a local parts store may have that conversion harness as well.I think it's called an "Si" to "CS" conversion harness. The Delco part number for the resistance wire harnessis #8078. The Delco nonresistance harness is #8077 Painless Wiring has a nonresistance harness as well.#30707 __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE Last edited by BobbyK; 07-14-2004 at 07:19 PM.