dharris2488 Posted September 14, 2014 Report Share Posted September 14, 2014 I don't run one on my Mechman. I called them to ask about this and they told me the decision was up to me. If it made me sleep better, then do it. Otherwise, no big deal. As others have mentioned, I have 300 amp fuses on my 2 runs of + to back batteries, then fuses off my batts to amplifiers (4 in total for sub system). This is kind of off topic, but anyway... Make sure to ground the alt casing to negative post if running a Mechman though. They REALLY stressed that to me, just FYI... 2013 Toyota Camry SE 240a MechMan HO Alternator 1/0 Welding Flex Cable Big 3 CT Sounds 4000.1D Kenwood XR400-4 Mid/High Amp SoundQubed Q4-120 Mid Amp Infinity Kappa 6.5 components Kappa 6x9's for rear deck fill (coming out) (4) 8" PRV 8MB450's Set of SoundQubed SuperTweets (2) DSS Ethos 12's D2's @32.5hz (building 4th order enclosure) (2) SQ HDC3 10's @ 33.5hz (current build, loving them) Pioneer AVH-X4600BT 100 sq/ft Stinger RoadKill Sound Deadner 120 sq/ft QMat Sound Deadener (4) Juice Box Black Cherries Lots and Lots of feet of SHCA wire, along with 50' of Welding 1/0 2 Runs of 1/0 Positive front to back ToolMaker Everywhere Link to comment Share on other sites More sharing options...
knowledge Posted September 14, 2014 Report Share Posted September 14, 2014 i never do. do ur stuff correctly everything will be good REFF'SMy linkEBAYhttp://feedback.ebay...ck&myworld=trueI love car audio so much because I will never be done. I can never win, and I will never get it finished or perfect. It always has me coming back for more, I can never get my fill of it, but I get what I need. Link to comment Share on other sites More sharing options...
SLYentist Posted September 21, 2014 Report Share Posted September 21, 2014 i don't put a fuse there, but i take extra care in running power wire to keep it away from any moving or hot (exhaust) parts. Running the regulator without the battery connected is bad, and shorting out the battery is also very bad. Balance the risks and make your decision. Cables and wires almost never fail; the terminations do. Link to comment Share on other sites More sharing options...
pioneerforlife Posted September 21, 2014 Report Share Posted September 21, 2014 I don't fuse between the alt and batt either 2007 Ford Focus SES Hatchback Pioneer HU 4 Digital Designs 9515i's in a B pillar. 2 Soundstream XXX 15K's (running at 16 volts) Soundstream Mids/Highs in custom door panels (getting rebuilt soon) Soundstream TA2.160 and TA2.400 Sky High and KNU wiring 3 Banks of Maxwell caps Winston Lithium (not a fan) Bump4Life 250 Amp Alt. aka USAlternators Soundstream Focus and Avenger Build Log Instagram @p4linnovation YouTube: Team Blowin Loud Link to comment Share on other sites More sharing options...
Soccerballzs Posted September 21, 2014 Report Share Posted September 21, 2014 I don't fuse here but run is less then 18 inches. Some with long runs to battery will fuse. I run Mechman here so I follow the directions what they said not to fuse. http://www.stevemeadedesigns.com/board/garage/vehicle/2438-jeep-commander/I Pioneer P99RSAmpere 38002-Ampere 125/44-6.5 inch Hertz HSK XL Mids4-8 inch JL Audio ZR Midwoofer 2-5.25 Satori Mids2-Morel Tweeters, 2 Hertz Milles 3 inch on A pillars2-Hertz Silk tweeters DC Audio Level 5/12 Skyhigh Wire Mechman 320 XS Power D3100MO Funniest Thread of the Year 2013: http://www.stevemead...dy-being-a-pos/ Link to comment Share on other sites More sharing options...
MrSkippyJ Posted September 21, 2014 Report Share Posted September 21, 2014 In my last 2 cars the manufacturer put a fuse between the alt and battery. Must be some reason to do it. F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
RainStryke Posted September 22, 2014 Report Share Posted September 22, 2014 I originally planned on running a fuse and bought one... but once I got it and saw it came with a 300A fuse and I didn't have the time or money to run across town to get a lower rated one, I just ran it without one. Works fine for me... hope my car doesn't catch on fire lol Link to comment Share on other sites More sharing options...
snafu Posted September 30, 2014 Report Share Posted September 30, 2014 Copied from our web site ( http://www.ceautoelectricsupply.com/big3kitstop.html ): FUSE THE CHARGE LEAD OPTION Most OEM charge leads have a fusible link on them. Its purpose is to protect on-board electronics in the event that the regulator fails and causes "voltage run-away." Although this is quite uncommon, fusing the charge lead included in any of our kits provides the same protection for your larger than stock alternator. When choosing this option, we'll include a Rockford Fosgate ANL Fuse Holder, a 100A / 125A / 150A / 200A / 250A / 300A fuse (your choice), and mounting hardware. In addition, we increase the length of the charge lead by 1 foot to allow you to choose a good mounting location for the fuse holder and still have a nice smooth run from the alternator to the battery. Tony Candela - SMD Sales & Marketing Email me at [email protected] to learn about becoming an SMD Partner! Link to comment Share on other sites More sharing options...
Jhunt94 Posted September 30, 2014 Report Share Posted September 30, 2014 I did put a fuse between my alternator and battery. It wasn't a particularly short run and made me feel better. I also did it for the same reason that snafu posted. Since there was a fusible link on the stock charging lead, I felt like I should just in case. 2007 Ford F-150 Reg. Cab. Flareside250 Mechman AlternatorSky High Car Audio Big 3 XS Power D3400Rockford Fosgate 1/0 amp kitRockford Fosgate T1500-1bdcpRockford Fosgate T400-4DC Audio Lvl 4 12"Rockford Fosgate Punch 6.5" componentRockford Fosgate Punch 6x8Pioneer AVH-P2300DVDSMD Volt Meter Link to comment Share on other sites More sharing options...
SLYentist Posted October 2, 2014 Report Share Posted October 2, 2014 most, if not all, car makers have a fusible link between starter and alternator. a wire made to a precise thickness so that it works as a fuse itself. Cables and wires almost never fail; the terminations do. Link to comment Share on other sites More sharing options...
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