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CHARGING LOOM FOR 2013 SR3RS

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Gordon Campbell
(@nodrog)
Eminent Member
Joined: 4 years ago
Posts: 18
Topic starter  

HI anyone got wiring  details  for charging loom (  one with 3o amp  fuse   /relay  ) as fryed  rectifier connector ..  


   
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will Dre
(@illwillem)
Eminent Member
Joined: 2 years ago
Posts: 18
 

Should be pretty straight forward, is the connector damaged, wires damaged, or the component damaged? Since it has a built in fuse i would be surprised if the loom itself damaged. Are the wires physically melted?


   
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Gordon Campbell
(@nodrog)
Eminent Member
Joined: 4 years ago
Posts: 18
Topic starter  

IN LINE fuse holder    melted     as cant pull out fuse   and white connector   melted   ..    easy repair  as can buy end 6pin connector  and in line fuse holder   but would like to keep as spare    rather than strip harness down  to find wiring connectors  that are encased in heavy rubber mouldings     Tim Gray  racing  make a heavy duty harness   here in UK   but at arpund £250   seems expensive  for whats involved 


   
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will Dre
(@illwillem)
Eminent Member
Joined: 2 years ago
Posts: 18
 

Strange. Heat to melt fuses/connector comes from resistance.. there are 3 scenarios to build that type of resistance.  1- either the connectors and pins weren't spec'd properly for the current, this is not the case here  2- The sizing is fine for normal running but you got a spike in load that maxxed out the properly functioning fuse and connector. You also would have popped the fuse like they are designed to do. 3- There was no spike in load, but the normal running load out matched a diminished contact. This generally happens when the electrical contacts are corroded or have insufficient seating of a pin/fuse. 

I have seen all 3 scenarios on (non radical) racecars over the years. You can rule out scenario#1 because there are many many Radicals operating just fine with the spec that yours fried.  This leaves #2 and #3. I have seen these same cheap inline fuses like the ones we get installed from the Radical factory fail, mostly from insufficient contacts due to the low quality manufacturing on the contact paddles, or something dumb like not pushing the fuse all the way down etc.

From the sound of it this is what i think happened to you. If it were me i'd pull the data from the AIM and/or the Life ECU and look to see if your voltage was spiking dipping surging before it happened. If it was not, you can rule out the larger underlying problem of #2.

Solving #3

I dont know anything about that Tim Gray harness other than saying what is on the Radical is a simple combinations of low voltages circuits. If it were me, i'd do an inspection of the wires a couple feet on both side of the damaged fuse and connector, if it melted plastic it will likely have melted wire insulation. I'd then buy new connectors/pins for the damaged parts and splice in new properly sized wires to a better, fuse holder that I resistance bench tested before putting in the car. $20 tops. That's just me. If you dont know how to do any of that, or don't have the afternoon to poke around and fix it, that £250 may be your best option.

good luck whatever you choose to do


   
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Gordon Campbell
(@nodrog)
Eminent Member
Joined: 4 years ago
Posts: 18
Topic starter  

Thanks for reply  ..  had  car for 5 years   never had a problem  charging untill the original rectifier packed up      (dropping voltage )  had a spare one     (ebay  one ... that few of my mates have used  without any problems )   this rectifier  has lasted  12 hrs !!     untill the cable  connector going onto rectifier toasted  .. Had new charging harness that came with spares  on car purchase   have fitted  and new suz  rectifier   all now good     14 volts    .. fitted new end pin connector / inline fuse holder   and ext  ebay rectifier   (which i tested diodes saying ok )   and 14volts !!  will keep as spare  ..  spoke to previous  owner    said  never changed  any electicals    so all original   harness  and rect  but had lots spares from racing team and this harness has sep  inline fuse holder ...  ill check out ecu  readings  let u know    ..      


   
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