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Left turn signal not working 1978 Suzuki GS1000

1978 Suzuki gs1000 left turn signal not working, right does, swapped wires and left worked. Then they both stopped working, ordered NOS turn signal relay but still nothing. Help me please @

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  • Suzuki Master
  • 58,679 Answers

Hi, Jesseok580 before testing any electrical component in the Turn Signal Light Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, "AGM" batteries fall into this category more so than lead-acid types, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals are working the cause could be a faulty turn signal module/flasher or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If your turn signal comes on but takes several seconds before it starts flashing you may have dirty contacts in the turn signal switch/button, the switch needs to be opened up and cleaned also the flasher may be starting to fail. It should be noted that cold weather will only exacerbate the situation especially when temperatures drop down below freezing and the location of the component, turn signal switches on the handlebar are at the mercy of the oncoming freezing 70 mph wind and makes it hard for the contacts to do their job covered in frozen grease/grime
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first, look for, corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.google.com/search?q=Left+turn+signal+not+working+1978+Suzuki+GS1000&tbm=isch&source=univ&sa=X&ved=2ahUKEwju0ITh6JriAhXBnOAKHRysD0EQsAR6BAgJEAE&biw=1440&bih=757
Troubleshoot Repair motorcleTurn signal light
Suzuki GS1000 Service Manual
https://www.partsfish.com/oem-parts-for-suzuki
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS1000E_Owners_Manual_79.pdf

Posted on May 14, 2019

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Posted on Jan 02, 2017

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pugwash814
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SOURCE: 1978 gs1000 suzuki wiring diagram

i have a wiring diag but it wont load on here ?

inside headlight shell the should be
right front-------grey / black / black with white tracer.
left front --------same again..

right rear-------black / black white tracer
left rear ------- same again..

Posted on Nov 01, 2009

heimlich
  • 1978 Answers

SOURCE: I have a 1978 Suzuki

Do Not use the diagrams. Your turn signals have certain colored wires that go to them as well as the headlight. Make sure you run a ground wire . If the turn signal uses a separate ground keep it separate. Your Windjammer wiring harness is also color coded . Make sure the colors used for the right signals in the fairing go to the corresponding colors for the right turn signal, then the headlight, then the left turn signal , Extra power wire for a cellphone charger or radio. I have purchased 6 motorcycles with Windjammer fairings on them and had to rewire each one because the installer could not follow the instructions and do it correctly. The only thing that might make your install tricky is if the fairing harness colors do not match from one fairing quick connector to the other. Draw a diagram on a piece of paper to keep your colors straight.

Posted on Oct 16, 2010

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1979 Suzuki GS1000, cylinders 2 & 3 are not firing


Hi, Anonymous you need "FIVE" things in order for a cylinder to run properly:
1. FUEL: in order to validate your not getting fuel spray some starting fluid into the air cleaner and hit the starter button, if it fires up and runs for a few seconds then you know you have a fuel delivery issue. Multi carb banks should be bench "SYNC"
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3. COMPRESSION: you must have at least 80-100 PSI for most bikes, multi-cylinder engines should be within 10-15% of each other if not perform a leak down test you may have a burnt or bent valve or hole in the piston or broken rings.
4. CAM TIMING: confirm your timing marks are aligned to see if the cam chain or adjuster are worn out and the chain has skipped a couple teeth.
5. IGNITION TIMING: on older bikes check to see if your points have not closed up, timing plate has not become loose and confirm with a timing light for proper retard and advance functions, on newer bikes where timing is controlled by an ECM and is nonadjustable check you CKP, TPS, MAP, O2, sensor or its counterpart for integrity.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
1978 Suzuki GS550 Cylinder Not Firing Tech Corner Motorcycle Classics
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jun 15, 2012 | 1979 Suzuki GS 750 E

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1978 suzuki GS1000 will crank but not start.


I have seen this happen when they are running out of fuel . check all fuel system to be sure it is getting fuel properly

Jan 10, 2018 | 1978 Suzuki GS 750 E

1 Answer

Where do i start charging system not working 1978 suz gs1000


Start by checking the stater output from there the voltage regulator output.
stater voltage is ac. and should be 3 yellow wires going to the voltage regulator.
This voltage will hurt you!
It is a good start

Feb 03, 2011 | 1978 Suzuki GS 750 E

1 Answer

I have a 1978 Suzuki GS1000. I'm trying to hook up a Vetter Windjammer fairing, CAN NOT figure out the wiring and I don't think i have the proper diagrams. PLEASE help!


Do Not use the diagrams. Your turn signals have certain colored wires that go to them as well as the headlight. Make sure you run a ground wire . If the turn signal uses a separate ground keep it separate. Your Windjammer wiring harness is also color coded . Make sure the colors used for the right signals in the fairing go to the corresponding colors for the right turn signal, then the headlight, then the left turn signal , Extra power wire for a cellphone charger or radio. I have purchased 6 motorcycles with Windjammer fairings on them and had to rewire each one because the installer could not follow the instructions and do it correctly. The only thing that might make your install tricky is if the fairing harness colors do not match from one fairing quick connector to the other. Draw a diagram on a piece of paper to keep your colors straight.

Oct 16, 2010 | 1978 Suzuki GS 750 E

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1978 Suzuki GS 1000, need manual would like to download it, anyone have anything free


The best I can offer is a 1980 GS1000. Ninety eight percent of the 1980 manual applies to your 1978 bike. The biggest differences are in fenders, gas tank, decals, trim and seat designs. Go to the site below for a free download. www.carlsalter.com/motorcycle-manuals.asp

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Jun 20, 2010 | 1978 Suzuki GS 750 E

1 Answer

1978 gs1000 suzuki wiring diagram . Trying to hook up turn signals


i have a wiring diag but it wont load on here ?

inside headlight shell the should be
right front-------grey / black / black with white tracer.
left front --------same again..

right rear-------black / black white tracer
left rear ------- same again..

Oct 31, 2009 | 1978 Suzuki GS 750 E

1 Answer

Need to know order of plug wires to cylinders


left to right, the engine cyls are1234. plug wires are marked.

Mar 15, 2009 | 1978 Suzuki GS 750 E

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