Join Date: Jul 2014
Location: Brisbane, Australia
Motorcycle: 1987 GSXR 1100 plus 48 others
Re: "87 GSXR 750 Indicator/Turn Signal Problems HELP!
There should be 1 power and 1 earth lead. On OEM the earth lead will be black, right and left side will have individual colours (usually green and orange) - these are the power leads. On replacement aftermarket indicators I have found that usually the leads will be black and black white. Usually black is power and black white is earth just to confuse but you can tell by taking the lense off and seeing which lead attached to the back of the globe mount and which one earths. Do that and you'll have the wiring sorted at the indicator end. Now make sure your indicator relay is in good nick as these go on the blink fairly regularly and are a cheap replacement. If the lights are not flashing or flash on one side and not the other replace it. Some indicators for the US market will have three leads - one is for a hazard circuit and may not be relevant to your bike unless it has the hazard warning circuit. Get a two wire indicator to replace if this is the case and not relevant to your market. You may find at the rear that the earth wires go into the same circuit as well through a double plug. Can't remember from mine. It's fairly easy to sort just make sure the manual is for your bike and country so that the wiring map is relevant. Do one side at a time as usually front and rear are on the same circuit. Looks like you're almost there so good luck.