Idle Affected by Current draw?

[got2b240]

I am trying to diagnose why my car acts like this. I have a capacitor and a Orbital Deep Cycle battery on my SR. When I put on the air over #2 button or say if I put my headlights on or open the door to activate the seatbelt motor, my idle gets affected by this? Is this normal?

[Luke]

The same thing happens to me. Also when the power windows are going down. The idle drops even more if I hold the button while the motor stopped. I was thinking about making a ground wire setup, but it looks like you already did that.

[Cyberkreig]

My fans and windows make that happen.

[got2b240]

yeah i guess thats what happens. But a worse thing happened to me tonite, I blew my turbine inlet gasket! It sounds like a blown supercharger! lol, Im going to use a coke can and Copper RTV to do the quick fix, this will all get replaced later on with my bigger turbo upgrade. Thanks for your input on this.