Electrical gurus help pls - no brakes, turn signals, horn
#1
Electrical gurus help pls - no brakes, turn signals, horn
I was fixing a few issues on the hawk today when i noticed that my rear left turn signal was out...pulled it out and the bulb looked weird...so i tried putting a generic bulb in there and it didnt light up....the blinker all of a sudden went from fast blinking to slow blinking and a split second later to nothing...
i have no clue what went wrong... now the turn signal switch doesnt do anything, the horn also doesnt work and the rear tail lights dont light up when u press the brakes....which are all the things that are on the same fuse...thing is, i pulled the fuse and its good, put another one in and it still does the same thing. there is 12V across the fuse terminal...
what else can i check?
i have no clue what went wrong... now the turn signal switch doesnt do anything, the horn also doesnt work and the rear tail lights dont light up when u press the brakes....which are all the things that are on the same fuse...thing is, i pulled the fuse and its good, put another one in and it still does the same thing. there is 12V across the fuse terminal...
what else can i check?
#3
Check continuity (Ohmns) from the fuse box to the various downstream +ve terminals in that circuit. I'm guessing you've got a broken wire shortly after the fuse box.
Have you installed anything on the bike lately, something that could have cut a wire?
Have you installed anything on the bike lately, something that could have cut a wire?
#4
i was in the process of checking continuity when it got dark and had to stop...
thats the weird thing....if only the turn signals failed than i'd be focusing on the wiring in that section...but its all 3 items that are connected on that fuse...and yet i have continuity from the fusebox to the relay and from the fuse box to the horn switch connector. which means that the main wiring behind the fuse box is fine...
its a total mind **** this one...
this is the reason i'm an aircraft mech and not avionics...i HATE chasing wires...
next step is to confirm that i have actual 12V with proper amperage before the fuse box...
i'm pretty sure me putting the wrong bulb in that socket is what did it...because it was working fine before it, i put this thing in 3 seconds later its all dead!
btw, bike fires up fine, when running it gives 13.8V to the battery, kickstand switch, high beam switch, neutral light, oil press light, rear running lights work fine, in fact the bike works fine except for no break light, no turn signals and no horn...i havent put the front fairing back on so to see if the front light works, but i'm sure it does
thats the weird thing....if only the turn signals failed than i'd be focusing on the wiring in that section...but its all 3 items that are connected on that fuse...and yet i have continuity from the fusebox to the relay and from the fuse box to the horn switch connector. which means that the main wiring behind the fuse box is fine...
its a total mind **** this one...
this is the reason i'm an aircraft mech and not avionics...i HATE chasing wires...
next step is to confirm that i have actual 12V with proper amperage before the fuse box...
i'm pretty sure me putting the wrong bulb in that socket is what did it...because it was working fine before it, i put this thing in 3 seconds later its all dead!
btw, bike fires up fine, when running it gives 13.8V to the battery, kickstand switch, high beam switch, neutral light, oil press light, rear running lights work fine, in fact the bike works fine except for no break light, no turn signals and no horn...i havent put the front fairing back on so to see if the front light works, but i'm sure it does
Last edited by Red_Liner740; 07-23-2009 at 09:33 PM.
#6
Nevermind, I just reread your opening post. I'll think about this as I ride the friggen bus to work (again!)...friggin rain
#7
believe me the problem has stumped me as well
i'm thinking of swapping the power cable leading up to the fuse from another fuse location, cuz on the wiring diagram they all come from the same source...so they'll be no problems there, that way i can see whether the problem follows to the new location or stays....
i'm thinking of swapping the power cable leading up to the fuse from another fuse location, cuz on the wiring diagram they all come from the same source...so they'll be no problems there, that way i can see whether the problem follows to the new location or stays....
#8
okay, final UPDATE...
pulled the wires from the back, traced them back where they all splice together, it all looks good. swap the cluster/running lights power cable with the horn/brake/turn cable and lo and behold brake/horn/turn circuit now works...but i cannot see anything wrong with the cable...
so out of a hunch i swap the 10A fuses....BAM, now the cluster doesnt work...
so it looks like i swapped in a new fuse that was defective as well...
so final warning, ALWAYS use a known working fuse....pull it from a working circuit and use it instead of relying on another unknown even though it is new...
Riff, thanks for flagging me, even though i checked the fuses, your insistence is what made me look again...
lol, you know when a problem makes no sense...its usually something you missed before.
pulled the wires from the back, traced them back where they all splice together, it all looks good. swap the cluster/running lights power cable with the horn/brake/turn cable and lo and behold brake/horn/turn circuit now works...but i cannot see anything wrong with the cable...
so out of a hunch i swap the 10A fuses....BAM, now the cluster doesnt work...
so it looks like i swapped in a new fuse that was defective as well...
so final warning, ALWAYS use a known working fuse....pull it from a working circuit and use it instead of relying on another unknown even though it is new...
Riff, thanks for flagging me, even though i checked the fuses, your insistence is what made me look again...
lol, you know when a problem makes no sense...its usually something you missed before.
#10
I have done his on my 4WD when the auxillary lights didn't work. Started checking stuff beginning with the fuses, and it all looked ok. Put a multimeter on the fuse and it showed continuity. Stuffed around for ages and could not find why my lights would not work.
Chucked a new fuse in and they worked. Tested the old fuse and it showed a circuit. Put the old fuse back in and they would not work.
Go figure.
Chucked a new fuse in and they worked. Tested the old fuse and it showed a circuit. Put the old fuse back in and they would not work.
Go figure.
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