amp ground ...
Road Warrior
Joined: Feb 2016
Posts: 1,354
Likes: 399
From: Vancouver, BC
I would respectfully disagree. Electrical engineering 101 would tell you to connect the negative amp lead to the frame. Running it to the battery puts that lead in parallel with the battery/frame bonding strap. Now some portion of all current is potentially flowing through your amp. This is called common mode noise and if for some reason the bond strap were to fail the amp becomes the bonding strap for everything including the starter (assuming you have no other accessories already improperly wired with ground run back to battery). That's a great opportunity to put on a good smoke show (albeit of very short duration once you press the starter button). In my opinion, you should always run the positive directly to the battery with a fuse as close to the battery terminal as possible and run your ground directly to the frame. Whether to ground to frame or battery is a long-standing debate so you do it whichever way you prefer. Always grounding to the frame is what I was taught a long time ago and it's a lesson that has never let me down.
Last edited by hamah; Jun 27, 2020 at 11:21 PM.
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