Saturno 500 Wiring Anomoly?
Posted: Tue Jan 02, 2018 5:59 am
HI - just passing on this info' in case anyone comes across something similar or has some relevant knowledge etc
1988 Saturno Bialbero 500
On changing the battery recently I replaced the fuses at the same time.
On re-connecting the battery the ignition was power-on and all electrics available with the ignition switch off.
I initially thought I had re-connected the battery wrong .
This bike has a fuse holder with 2 x fuses (15 A & 7.5 A) with supporting wiring, there is also a a 20 amp fuse on the voltage regulator.
The Saturno wiring diagram that I have shows only a 20 amp fuse on the regulator and a single 15 A fuse ahead of the ignition switch.
This bike seems to have the 3 x fuse system as per some Nordwest Diagrams - though the 2 x fuse and 3 x fuse wiring systems support different ignition switches and my ignition switch is definitely saturno type.
To fix the ‘power on all times’ problem I removed 1 x fuse from the 2 x fuse carrier.
On inspection of my old (removed) fuses I noted that 1 x was faulty/blown – maybe it had been intentionally fitted as such?
Every function works OK with the offending fuse removed – but I am confused as to how it came to this - the harness looks and probably is original.
I spent a bit of time ‘fault finding’ before removing the offending fuse and fixing the problem – so pass this on in case anyone gets confused by similar issues or can explain if I am misunderstanding something? Are there any good electrical diagrams available?
I know how to start the bike easy should I lose my key now!
Cheers
John
1988 Saturno Bialbero 500
On changing the battery recently I replaced the fuses at the same time.
On re-connecting the battery the ignition was power-on and all electrics available with the ignition switch off.
I initially thought I had re-connected the battery wrong .
This bike has a fuse holder with 2 x fuses (15 A & 7.5 A) with supporting wiring, there is also a a 20 amp fuse on the voltage regulator.
The Saturno wiring diagram that I have shows only a 20 amp fuse on the regulator and a single 15 A fuse ahead of the ignition switch.
This bike seems to have the 3 x fuse system as per some Nordwest Diagrams - though the 2 x fuse and 3 x fuse wiring systems support different ignition switches and my ignition switch is definitely saturno type.
To fix the ‘power on all times’ problem I removed 1 x fuse from the 2 x fuse carrier.
On inspection of my old (removed) fuses I noted that 1 x was faulty/blown – maybe it had been intentionally fitted as such?
Every function works OK with the offending fuse removed – but I am confused as to how it came to this - the harness looks and probably is original.
I spent a bit of time ‘fault finding’ before removing the offending fuse and fixing the problem – so pass this on in case anyone gets confused by similar issues or can explain if I am misunderstanding something? Are there any good electrical diagrams available?
I know how to start the bike easy should I lose my key now!
Cheers
John