Question about 2004 Yamaha Road Star Silverado

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30 amp main fuse blows when the key is turned on.

First started while riding on freeway, motor just quit (blown fuse) replaced fuse, moved wiring harness around, started and ran for a while. 'But now the fuse blows as soon as the key is turned on. I can't find any wires that are shorted out. Could it be the selinoid of voltage regulator. Sometimes the fuse blows while trying to start engine. Engine has 10.5 to 1 high compression pistons with electric compression release that does not seem to be opening up enough. The battery seems plenty hot enough. Sometimes when cranking the starter, I can smell what seems to be some wires getting hot, but cannot locate the hot spot. All wiring looks good, but can't see all places where the wiring harness runs between the frame and motor. Need help in knowing where to look for a short, ground or maybe a falter ignition part.

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  • kwd27 May 11, 2010

    Where you carrying anything (anyone) when this happened?



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Can be "nasty problem, for it can mean DEATH, if as you attempt traffic manouvre & it blows !-(As safety precaution , & this TIP would be useful to most all Bikers>Call to friendly POLARIS ATV Dealer & ask for Automatic Re Settable 20 AMP PROTECTOR ( tHIS FITS THE 500 sPORTSMAN A T V & as far back as the 350L 2 Cycle Firebreathing A T V ()Standard Equipment )-Wire that in from POSITIVE Supply on to your loom, & attch its earth ( Negative cable to NEGATIVE > - on Your Battery!--That done, procede to your RecRegulator Unit &Examine Likely "Melting of Delrin (Nyloc, White looking plastic connector plug to terminals of Rectifier/Regulator , Test Output from Alternator., Ensure ALL Eaths have been attended properly, by Unscrewing, & Shining through the Paintwork Refit, tighten & Apply Silicone Sealant ( So that when You "Power Clean" the Motorcycle You wont be "Degrading the EARTHS again!--Now Ride!--If the Loom Loom, near steering head happens to "Short out" The POLARIS Re Settable Fuse Link & Sealed in waterproof covering, will Re Set & then You get chance to further investigate at Your workshop!!Arm yourself with Voltohmyst , or Multimeter OOR mini pointer that can sense Current Flowing, check out ALL Swithes ( Disconnect rear brake light switch & front one by way of unplugging supply leads ( Just possible that You have intermittant short in one of them!--Did You happen to note IF You were turning slightly to Left or Right when Fuse Blew?--Well, look then for "Stress areas for wiring looms, as at Steering Head Stem region, Open the Sheath with Razor Blade & attempt to pull wires apart slightly , then EXAMINE RFOR>bare leads !---With Multimeter You could slowly "ISOLATE" components & IF You had reference to WIRING CHART You then could Painstakingly TRACE EACK LEAD & ENSURE it has no "LEAKAGE "--Best Of Luck & "StayUpright" -Des.

Posted on Jan 17, 2009


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