dharris2488 Posted March 25, 2014 Report Share Posted March 25, 2014 Do I, or do I not need a 250 amp fuse from the positive alt to positive battery cable for my 240a S-Series Mechman Alternator? I spoke with Brian last week about it and he told me that I could, if it gave me peace of mind. I don't want to waste my money and time if I can avoid it, but I also want it done correctly. I'm confused, as I always see fuse blocks from this wire. Also, other HO Alternator companies do recommend the fuse block on this wire. I don't want to burn up my car or void the warranty, just to get a little more amperage/voltage to my system. Yes, I have run 1/0 wires from the positive alt to battery, alt to negative post on battery, and a 1/0 run from negative post of battery to strut tower bolt that was sanded down to metal (drive a Toyota Camry, best place to ground to frame). So, do I need a 250 amp fuse block on the positive wire? Also, I assume I did the Big 3 upgrade by running the wires as mentioned above. Do I still need to run a 1/0 wire from my negative battery post to my engine block? I assume this was completed as I ran the 1/0 wire from my alternator mounting post to the negative post of my battery. Any suggestions or feedback will be greatly appreciated. I am a noob when it comes to electrical, but not completely green if you know what I mean. I have set up many systems, but none with such an upgraded electrical system that I am about to install. More on batteries later... I want to address alternator first. Thanks! Quote 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...
hdorre Posted March 25, 2014 Report Share Posted March 25, 2014 Meh, I don't see a point. Just don't route the wire stupidly.. This is the only wire I don't have fused.. Quote On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
dharris2488 Posted March 25, 2014 Author Report Share Posted March 25, 2014 Appreciate it hdoore... I drive a lot for my job, sometimes 10 hrs at a time. Didn't want anything overheating, catching fire, you get the point. I have it run the shortest possible route I could find. Do you think I should run one more ground from the negative battery to the engine block? I'm not hearing any whining or anything like that, so I think all my grounds are good. Just wanted to lower resistance anywhere I could. After doing resistance testing on alternator, everything was .01 or .00. All should be good I suppose... Quote 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...
hdorre Posted March 25, 2014 Report Share Posted March 25, 2014 Damn, I like that resistance For my car, the ground run I upgraded are engine block to chassis, and chassis to battery. You already have a run from batt - to engine block though, right? You should be all set Quote On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
dharris2488 Posted March 26, 2014 Author Report Share Posted March 26, 2014 Damn, I like that resistance For my car, the ground run I upgraded are engine block to chassis, and chassis to battery. You already have a run from batt - to engine block though, right? You should be all set Thanks for the assurance... Yeah, i was surprised at the resistance as well. I forget which cable exactly, but it was bouncing from .01 to .02. Those were the highest readings though... Quote 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...
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