Does anyone know if the 2004 GS500F has a fuse for the turn signals? If so where is that fuse located? The problem is that I've installed new signals (LED 12v 23w) on my GS but when I turn them on to the left or to the right all four lights will blink. In addition to that the indicator light near the ingnition no longer comes on like it is supposed to. According to the manual there is only one fuse for the bike. That fuse is not blown. All of my other lights, horn, functions work. HELP

OK the relay is the culprit. now on a old GS I'd slap a 2 prong generic (wagner 552) from autoparts place. We had bi metal, we need electronic ... simple. New GS ... no clue.
Cool.
Srinath.

The way it works (to the best of my knowledge):

<complete drivel deleted, to avoid confusion>

I was completely off; go with Starwalt's diagram below:

We've been kicking turn signals around in this thread. If you read down the thread you will find the latest of my simplified GS schematics. But for the price of an internet transfer, here it is again...


This schematic is the same for the 04. You have made a wiring mistake somewhere. A possibility is you connected the Lt Grn wire to the Blk wire coming from the turn signal switch. This would cause all the signals to light and keep the indicator from coming on (because the indicator uses the 0VDC path of the unused signal pair to turn on).

Hopefully you can correct the problem with the aid of this drawing. In your future electrical mods, change only one thing at a time and test the operation. That way you don't have so much back tracking to do.  

When my husband gets a chance we will definitely look at it and change the wiring.  I know we were told from a friend to connect the light green from the new turn signals to the blk and white wire on the turn signal switch.  Hopefully this will solve the problem.  So I'm guessing for the left side we need to connect the light green wire from the new signals to the blk wire and the blue wire from the signals to the blk & white wire of the switch itself. Right side- connect the light green wire of the new turn signal lights to the light green wire of the switch and the blue wire from the signals to the blk and white wire?  Is this correct?  Thanks for your help.

Hey,

I had the same problem! with mine after i installed new signals, no Idicator light, and all four went on. Turned out the problem was the simplest thing ever. The wires in the the fairing for the front signals was disconnected. Only one side tho. They came loose my guess. And it took me about 45 minutes to figure it out. hahaha. oh well. You may have the same problem. Wires might have come loose espeacially since u replaced them like me. Check the front wires.  

Try to keep the colors of the wire as near original as possible, even if this means swapping components around to match. It will mean less trouble in the future.

When in doubt, stick to the schematic!  

we will try....now where do all the wires connect and meet on the bike?  thanks guys

Well...it is a simplified schematic!  :lol:

I have a 90, not an 04. I have the lastest version of the Suzuki service manual that I verified the schematic with. So take good notes, or good pictures of what you are doing. Most importantly, if you get frustrated just back away and look for familiar things.

If you are learning something new, it will be a little odd at first.

once again went back hooked everything up have the correct connections light green to blk & white wire blue to blk....still all four are blinking....ready to just take it to the shop....can't figure out why this happened especially when all we did was basically just change out the signals nothing else...the wiring still stayed the same.  Now when we go back to test the old signals those won't flash at all...yet the new ones all we can do is get all four to flash at the same time.....any other suggestions if the wiring is correct?  And why would this all of a sudden happen if we just changed the signals.  The wattage for the lights have nothing to do with it right.  I only ask because the manual says the signals for the bike are 12v 21w and the new signals we have hooked up are 12v 23w.  Could this have damanged a relay or something?

My problem is that I am working blind here.  :dunno:

If the new signals have color wires, you should match color for color. Previously it sounded like someone told you to mix colors. THIS IS A BAD IDEA.

What type of connectors did your new lights have? If they are the "bullet" type, what are the colors of the wires on the new lights? Were there instructions with these components? If so, are the instructions online so that I could get some visibility of the installation tasks?

If you take this to the dealer, be prepared to pay premium shop rates per hours. They love this type of service call. $$$$ $$$$$

The GS light green wire is the switched source of voltage from the turn signal switch and should not be connected to the GS Black/white wire. Blk/Wht is the system return, chassis ground, earth, etc.

Does the turn indicator, on the instrument cluster, function?

If these are LED lamps, they may be polarity dependent and reverse connection could cause odd behavior.

Once again, I am blind here. Can you take pics of the connections you made? You can email them to me at the address listed in my profile.

A little online research shows that you can get the symptom you are describing with LED lights. You will have to either remove the turn signal indicator or install steering diodes as per this webpage here.

This is the polarity dependent thing I mentioned previously. Pull the TS indicator lamp out and see what happens then. Of course you will have to get to it...

Once again, it is difficult to know what you have without seeing any of this. It is frustrating for me as well. I really want you to succeed with this mod. Hang in there!

Turn signals: Technical.

First of all, check if something in your bike is wrong by reinstalling
all four incandescent bulbs (standard 12V 21W bulbs), and testing
if it works again.

::: How relay works :::
(the reason for the lights to stay on)

The relay works as an automatic on-off switch, because inside it
there is a bimetallic piece that changes its shape when hot.
How to hot it? by making electricity pass through it.
So, when cold, electricity takes a path from the battery, through the relay, through the turn signal selector, and through the two bulbs.
When hot (after 1 second) the bimetallic changes its shape and disconnects.
Once disconnected, the bimetallic cools down (1 second) and returns to its
original shape, reconnecting again, hottening again, connecting and disconnecting till the user cuts the circuit by disconnecting the signal lights.

The meaning for all this: you need an exact amount of current to flow
through the relay to make it work propperly. This needs that each
bulb has a resistance of 7 ohms.
Your LED lights will probably not meet that resistance.
The 21W label will mean that it has the same light emission as a 21W lamp
but LEDS need very few current to achieve it.
So your relay will not work with lamps that do not have 21W / 7 ohm.
This is the reason for the lights keeping on instead of blinking.

::: How bulbs work :::

Hehehe this is simple, but are quite different from LEDS.

Lamps work by a current that flows through a wire, it gets hot, gets red, and finally bright. Simple.

Diode is completely different, but the main difference is that current only
can flow from positive to negative. If you make it flow reverse, the
diode will not make the light.

So...  we should see if Suzuki wiring is according to:
Lamp holder: negative, pin: positive.
And if bulb wiring is so.

::: The turn indicator :::
(the reason for 4 lights instead of 2)

The turn indicator is an additional lamp that is connected, one
wire to left turn lights, and other wire to right turn signals.

OK, that lamp gets current from one pin if turning left and the other pin when turning right, but the path to the negative goes through the lamps in the circuit that is disconnected.

That is, when turning left, the signal indicator sucks electricity from the
left circuit, and flows through the right circuit to reach negative.
When turning right, the signal indicator sucks electricity from the
right circuit, and flows through the left circuit to reach negative.

Then, if there is electricity flowing through all the cricuit all times, then it is normal that all 4 lights blink at a time.

Then... why did it work when I purchased the bike at Suzuki dealer?

The reason is again resistance in the bulbs.

When turning left, the left bulbs are connected through the relay to
the battery, and they blink. The signal indicator sucks the electricity from the left circuit, flows through the turn indicator bulb, and reaches the bulbs in the right circuit. They do not blink because there is very few electricity passing through them... the limit is the resistance inside the turn indicator bulb: 2.5W / 60ohms. This only lets flow enough power through the right bulbs to produce 1.25W each, they will make very few
light (if any) with that electricity.

When turning right, the right bulbs are connected to the battery, and they blink very bright, the turn indicator will bright too with its 2.5W power, and
the left bulbs will handle the regulated load of the turn indicator bulb, that is 1.25W each... resulting in very few, if any, light.

The reason for your 4 lights to work: 1.25W of power will not make
a 21W bulb work, but will probably make a LED bulb work because they
need very few power.



::: What's needed to make the GS500 work with led bulbs :::

First of all, replace the relay with an electronic one, that can work without depending on the number/type/wattage of bulbs connected.

Then, should disconnect the turn signal indicator and replace the circuit with a couple of diodes and a ground terminal (ask if interested).

It is not easy if you are not used to mess with electricity.

What kind of diodes would be needed?

bumpskeys

my turn signals flash without the indicator bulb in.. but theyre very dim.  by responding you'll potentially be saving the life of a fellow gs'er

What kind of bulbs, etc? I recommend starting a new thread (yes, another turn signal one!) and providing all the relevant details.

edit: sorry, I see you did start another signal thread
http://gstwins.com/gsboard/index.php?topic=43756.0

It's a bit short on details though...