Question about 1987 Suzuki LS 650 Savage
Check all the grounds.
Clean the connections everywhere and see what happens.
If you are talking about the back and it has 2 filaments someone has put front signals on the rear. These bikes came with front turn signals that take dual filament type 1157 bulbs like the ones used in tail/brake lights. The lower power filaments are on normally and the when you switch a turn signal on the low filament in that bulb is turned off and the high power filament flashes.
I would start by checking the bulbs with an ohm meter or continuity checker. The rear bulbs (1156 type single filament) should have somewhere between 0.5 and 1.0 ohms between the metal shell and the contact. The front bulbs (1157 type dual filament) should have between 0.5 and 1.0 ohms between the shell and one contact and 2 or 3 ohms between the shell and the other contact. If any bulbs have no continuity replace them.
If the bulbs are all OK you need to check the connections where the signals plug into the harness. The rear connections are usually under the passenger seat and the front ones are usually inside the headlight shell. Make sure everything is plugged in the way it should be - the wires are all colour coded to make it easy: green to green, light blue to light blue &c.
If the bulbs are OK and the wires are all plugged in correctly the problem could be the switch and it probably just needs to be cleaned. If you don't already have contact cleaner in your shop you should get some. Contact cleaner will fix more electrical problems than your buddy who is really into wiring. ;-)
Note: You need to get real contact cleaner. WD40 is a fine product and has many uses, but it is not real contact cleaner. It leaves a sticky residue that will attract dust and you will have dirty contacts again before you know it.
You can usually clean your switches without taking anything apart. If you look at the bottoms of your switch clusters you will see that there are small holes, just the right size to accept the straw from the contact cleaner and located so that it will spray right onto the contacts.
Just spray the contact cleaner into the hole and work the switch or button vigorously several times, then turn on the key & try it. You might need to repeat the process several times before it works properly.
Its possible that you can find all the answers to this and other problem in the Service Manual:
* Fix-Your-Problems Service Repair Manual Year/Model Application: 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Suzuki LS650 (LS-650) Savage Motorcycle.
Hope help with this.
Posted on Apr 29, 2010
Are they staying solid, or not coming on at all??
Posted on Apr 28, 2010
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Posted on Jan 02, 2017
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