|
|
Post by marlon on Dec 23, 2006 18:17:08 GMT -5
Hey Guys, I'm doing some amateur electrics at the moment on my SR400, and installing some different blinkers. I'm earthing the blinker on the frame itself, but running from the positive to the battery are these little doobiwhackers...  They say: "Royal 661 5W 1(Ohm Symbol) J" Now my question - these heat up a far bit when using the indicators, quite hot to touch. The engine wasn't running when I was testing this. Is this normal? They were wrapped in factory gaffer tape when I started. Any help would be greatly appreciated! |
|
|
|
Post by sjef on Dec 24, 2006 4:01:16 GMT -5
Hallo Marlon
these are resistors used to compensate the missing resitance when the bike is fitted with indicators with smaller watts lightbulbs. in other words are the 4 original indicators mounted with the right bulbs?
regards sjef
|
|
|
|
Post by wotavidone on Dec 24, 2006 4:14:46 GMT -5
Dood, these are resistors, as I am sure you have guessed.
The purpose? Depends on a couple of things. If they are wired in series with the indicator globes, then they're there to limit the current.
If they are wired across the indicators, i.e. in parallel, then they are there to increase the current that flows when the indicators are actually on.
Either way, this would be so that the correct current is flowing through the flasher can, to make it work properly.
I have zero experience with the SR400, but if I came across an SR500 with these resistors, I'd assume they were non factory. The usual reason to use resistors is because you do not want to use the correct wattage bulbs.
In any case, resistors such as these are encased in ceramic because they do get hot.
Have a look at your wiring and see if they are in series or parralel.
This will give us a clue as to their purpose. Also have a look at what size globes are in your original indicators. If they are a higher wattage than standard, or maybe are LED's, this would lead you to suspect that the resistors are there for current limiting purposes.
If low wattage globes, then one would expect that the resistors are in parallel, so as to increase the current flow.
Anyway take a look and report back.
Hope some of this ramble helps.
Happy Christmas
Mick
PS, i am assuming they are not really wired straight to the battery positive - they are really in the wire that goes from the indicator bulbs to the flasher can itself?
|
|
|
|
Post by marlon on Jan 2, 2007 6:06:26 GMT -5
wotavidone! Thanks for the great reply!
After having a poke around, and nutting the whole thing out it looks as though the resisters are in parallel, as you said. After checking around, they are factory standard on SR400's. Also, you're spot on - they don't run straight to the battery, they go from the indicator bulbs to the flasher can itself.
I'm earthing both the front and rear indicators on the frame, and it seems to be doing alright. All i've got to get done now is the friggin' clipons and getting the throttle cables to snap back to idle properly. For the love of me i can't get it right. (I've got some SR400 short throttle and throttle return cables too... I thought it'd be easier than this!)
|
|
