Indicators not working when engine is running

[wackyrider]

Having a strange issue with the indicators. Ignition on and engine off indicators work fine. Crank the engine and leave it idle they work. Rev the engine and have an output of over 14.4V (readout taken from dash so may not be 100% accurate) and the indicators don't work anymore. They stop lighting.

Bit of a weird one. Only thing I can think of is the flasher can is an aftermarket one. Anyone around Brissy have an original one for me to test to see if it solved the problem.

[wackyrider]

Problem is on the K4 Gsxr

[Large]

How high is the voltage?

It shouldn't be over 14.4v

[wackyrider]

I think it max's out at 14.5, but when you rev the engine it usually goes to 14.4v, 14.5v. Indicators stop working, which I can't figure out why.

[Chase]

Are the indicators LED? Have you got resistors wired in?

[Tim]

they are LED indicators, no resistors.

[Chase]

Chuck a multimeter on the indicator + and check the ohms. Connect up a stock globe indicator if you have one and see if thats ok.

[wackyrider]

I'm using stock globes right now. With LED's the usual problem is getting them to flash; as in they stay constantly on. In this case when I rev the engine, they do not light anymore

[bluedrags]

When I replaced my front globe blinkers with led they stayed on so I wired in some resistors just to front indicators and they work fine so maybe that could be a simple fix worth a shot.

[Tim]

not the issue..

works fine with the engine not running.(perfect timing and all)

[ozzy1100]

they blinked as they should until motor was above idle or not running
dash voltage maxed at 14.5 dont think i seen a 14.6
load and type of blinker made no dif ( we tried a few of both)

I hadnt thought of reg like large pointed out but easy to check with meter and jules was thinking of borrowing a suzy flasher from some 1 to test

[ozzy1100]

btw tim how much fun did you have with those tiny fucking motogadget wires?????

[Redmohawk]

Is your voltage reg/rec well earthed and bolted to a heat sink ? No idea on your's specifically but alot tend to go bad without both a good earth and cooling (more the earth in your case I'd bet) Voltage going to high might be causing issues with puter. Other thing is check all earths on front end for lights including indicators headlight etc

[Tim]

btw tim how much fun did you have with those tiny fucking motogadget wires?????

That was easy compared to not being able to source a wiring diagram for the suzuki dash and having the german to engrish google translated instructions that motogadget supply.

[ozzy1100]

That was easy compared to not being able to source a wiring diagram for the suzuki dash and having the german to engrish google translated instructions that motogadget supply.

oh yucky yucky and more yucky

[K6Thou]

Any bike I have ever owned has always had indicators that only work intermittently, they light up then don't, then light up then don't.......

[hyofighter]

Wacky I reckon you need the resistors . At 12ish volts at idle the current draw on the led is more than the current draw at the 14ish volts depending on how sesitive your relay is this my affect the function of it . Simple test is to get a old style test light with a globe in it and run it over the + and - terminals of one of the indicators whilst still plugged in (back probe it) the extra load of the test lamp will up the current draw and may get your relay to flash .

[ozzy1100]

We tested diffrent globes and loads this did this without LEDs connected

[Redmohawk]

Using the Lipo battery still ?

[Chase]

Swap out the flasher relay.

[Tim]

Using the Lipo battery still ?

nope, that died days after he made it to brisbane. :mad:

[ozzy1100]

He ended up useing a agm jaycar 9 ah

[Redmohawk]

I'd be looking hard the the reg then. 14.6 wont cook it fast but wont do it all the best over 14.2 is getting testy for sealed lead acid

[wackyrider]

The reading that was taken was off the dash. i will confirm with a multimeter to check. I'll also try an original flasher can as the one I have is an ebay jobby and may or may not be wonky. I might try and earth the rec/reg better as well to see if it makes a difference.

[Redmohawk]

The reading that was taken was off the dash. i will confirm with a multimeter to check. I'll also try an original flasher can as the one I have is an ebay jobby and may or may not be wonky. I might try and earth the rec/reg better as well to see if it makes a difference.

Where is the Reg located ?

[wackyrider]

I've relocated it under the new seat unit. Plenty of air for it there. it's mounted to a Powdercoated plate, but I foam under it to stop vibration. It's mounted using 2 nutserts. I can try to ground it better.

[Redmohawk]

I've relocated it under the new seat unit. Plenty of air for it there. it's mounted to a Powdercoated plate, but I foam under it to stop vibration. It's mounted using 2 nutserts. I can try to ground it better.

Good bet its not earthed enough, if the dash is seeing 14.6 volts the reg is prob closer to 15v (losses in wiring to dash from tail)

[wackyrider]

I could always run an earth wire from a mounting bolt straight to the chassis or neg terminal

[Redmohawk]

Make it a good size NOT standard electrical wire , you want zero resistance to frame (or close to) use something with 5mm square of conductor. Solder connectors or at the least propper 360 deg crimps not the crap you get in a standard auto elec crimp kit.

Any resistance to earth will show up as the wrong voltage in your bikes system, and or voltage spikes whilst out riding. Or a dead reg/rec at some stage.