WalledSonic Posted October 8, 2016 Report Share Posted October 8, 2016 I searched the forums a bit this morning and didn't find a definitive answer: I am connecting the D3400 in the engine bay to my D3100 bank in the rear. The positive runs are fused at each end of the run (from front to rear). But, is there any need to fuse the negative wire runs? I already understand the concerns with fusing in general: -Fuses add resistance, possibly decreasing SPL -Fuses add safety, helping prevent a fire when something goes wrong Any knowledgeable advice is appreciated. I completely understand that I can get away without fusing the negative, I'm wondering if there is a legitimate reason to do it. Chevy Sonic Wall (4) 15's on 10k Build Log https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/ (4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts Jeep Wrangler JK (4) 8's in a 4th Order Build Log https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/ IG @walledsonic Link to comment Share on other sites More sharing options...
MADVIBES Posted October 8, 2016 Report Share Posted October 8, 2016 you dont need to fuse the ground cable if the power is fused. DB DRAG PSYCHLONE PRO 156.3 30 SECOND AVERAGE FO MAX AT 26HZ LEGAL DASH DRIVER DOOR OPEN 158.0@30 HZ MY BEST SO FAR, HOPEFULLY A 160 COME FEBUARY. 156.9@26hz 158.0@30hz Link to comment Share on other sites More sharing options...
Kyblack76 Posted October 8, 2016 Report Share Posted October 8, 2016 what the fuck ...... SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted October 8, 2016 Report Share Posted October 8, 2016 A fuse on a ground would be unnecessary. The purpose of grounding the long positive runs is to prevent a short circuit if the cable gets pinched in an accident in the metal of the car. If a ground gets pinched it is still ground so no short circuit. 91 C350 Centurion conversion ( Four Door One Ton Bronco) 250A Alternator (Second Alternator Coming Soon) G65 AGM Up Front / Two G31 AGM in Back Pioneer 80PRS CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon) Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon) Link to comment Share on other sites More sharing options...
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