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battery light comes on and off for no reason.new battery installed.what should i check its a 1992 750 ss
Test your voltage across the battery (with a multimeter)- if it doesn't go to around 14 volts, then it's either your stator or RR (Rectifier and voltage Regulator - all in one unit) that have died (very likely). If it does go to 14 volts (with a few revs), then possibly a fault in the wiring to the warning light (unlikely).

Look through the previous 5-6 (maybe more!) pages in this forum for threads titled 'Battery' or 'RR' problems... There's a few of them, and they'll give you all the info you need to figure out the rest, and what to get (NOT a genuine Ducati RR!).

Ah hell - here you go (must be 'Be kind to Aussies' day ;)) - http://www.ducati.ms/forums/57-supe...s-does-ducati-still-make-one-my-94-900ss.html

And here's a post I did with handy links on how to test... http://www.ducati.ms/forums/57-supersport/144588-issues-battery-2.html#post1433333

You can pick up multimeters cheap at most auto accessory/electrical shops - or DSE...
 

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There's a heap of threads on this & similar electrical & charging faults in these forums if you do some specific searchs..type in "charging problems" "regulator /rectifier " for example..

Ducatis are notorious for having regulator /rectifier issues & under-rated wiring..So my first step would a simple test via voltmeter on the battery terminals & confirm that the bikes actually charging the battery..should give a reading around 13.5 >14 volts whilst revving @ 3000rpm..If that checks out then a visual inspection of the wiring looking for signs of frayed or burnt wiring ...IE: wires going in & out of the regulator../ battery terminals / starter motor / earth points onto the frame etc..
Its a good way to get to know your way around the bike & you'll be glad you did & learn to troubleshoot easier...in conjunction with references & articles in the forum:)
 

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I put my money on the 2 AC wires that run from the stator, over to the RR (Regulator Rectifier). each of these 2 wires has a connector that routinely overheats.
IF this is the problem, do yourself a favor and bypass the connectors with solder and heat-shrink.
 
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