Hello! It's been quite a few years since I passed my Extra Class test. Admittedly, I have lots of antenna making skills and experience, but I'm quite rusty on simple circuits. I've never actually wired a relay before. It seems simple enough, but at the risk of damaging equipment I can't afford to replace right now, I'm reaching out to the collective knowledge base! I want to add a foot switch in line with my ANC-4 DC power cord. I want to do this because oftentimes the relays inside the ANC-4 click on/off during transmit because my Noise Sense antenna is too close to my transmit antenna. I cannot re-locate the noise sense antenna. Oftentimes I just switch the ANC-4 off during transmit, but this is a pain. I think I need a Normally Closed relay. It seems simple enough, but I'm confused about the grounding. From my DC power strip, I should apply Positive and Negative wires to the corresponding terminals on a relay. Another terminal will power my ANC-4 "normally closed". Another set of terminals will be wired to my foot switch. I can open the circuit when the foot switch is pressed, which will (or should) momentarily cut the power from the ANC-4 while I'm transmitting. Most diagrams I see only have one positive wire to the "device". This is where I need wiring help. I want to make sure I purchase the right type of relay for this application! I see many automotive relays on Amazon which are relatively inexpensive. Suggestions are appreciated. Sure, I could probably just wire a SPST switch inline with the DC power cord to the ANC-4. The relay seems like a cool project & also it's practice for me. I have future plans of making a remote ladder line antenna switch using relays. Thanks for reading, and thanks in advance for your help!