Classic magnum flashers

[sd186man]

7140 we acquired last year has been in the family 25 years, led front and rear flashers resulting from a hailstorm insurance repair. I’m sure they never worked, and I am stumped trying to get them working. Nothing would happen with hazard switch, turn signal either way would light three but no flashing. Fuse is good, so far I have replaced both the flasher and light switch and wired in a resistor at each of the four lights, and cleaned the ground cable under the right front cab, now hazard switch is still dead, turn signal either way flashes the left rear, left front is steady, I’m out of ideas, don’t see any wiring hacked up anywhere, any help will greatly appreciated 

[mmi]

$75 flasher module would need specced for all LED at x load

vs old style truck where one out slow blink two out fast three odd dull to constant...etc

[brahamfireman]

12 hours ago, sd186man said:

7140 we acquired last year has been in the family 25 years, led front and rear flashers resulting from a hailstorm insurance repair. I’m sure they never worked, and I am stumped trying to get them working. Nothing would happen with hazard switch, turn signal either way would light three but no flashing. Fuse is good, so far I have replaced both the flasher and light switch and wired in a resistor at each of the four lights, and cleaned the ground cable under the right front cab, now hazard switch is still dead, turn signal either way flashes the left rear, left front is steady, I’m out of ideas, don’t see any wiring hacked up anywhere, any help will greatly appreciated 

Does this tractor have the huge box thing on the back of the turn signal switch with 6 or so wires going to it?  If so that's the flasher module,  easiest thing to do is find wiring diagram and start sending 12V through each wire to verify all wiring to flashers is good. If wiring checks out good you're back to a bad flasher box.

Also I'd get rid of those resistors, just more load in the circuit when the goal of LED lights is less load.

[TB5288]

I installed LED flashes on 8950 without resistors and they work fine. The resistor was intended to provide an additional load so the flasher trips. There's enough load on the system without the resistor to trip the flasher. I'm not saying the the resistor is your problem but take them out. Sounds like you need a wiring diagram.

[supermechanic]

These have always been my go-to solution.

https://www.ebay.com/itm/388798988661?chn=ps&google_free_listing_action=view_item

[HydroTek]

That flasher unit does not need resistors

2 power sources to the flasher unit 
-- one constant -- "center" terminal
-- one from the headlight switch , first position -- outlying terminal 
-- dash indicator terminals are near the center power terminal
-- turn lights are the outer terminals 

If you get one light steady when you choose a direction
-- then you have the constant power source working
-- that steady light is from the mechanical selector switch in the unit 
-- should also work the other direction 

LED bulbs are polarity specific -- need to check the socket with a meter 

Check the voltages at the unit plug with a test light
-- you can also hot wire the lights without the unit to check the wiring 
-- go from the center terminal in the connector to the terminals near and see the lights work 

[TroyDairy]

HydroTek is right.  Check the wires up top.  Make sure wire correct polarity.  BUT, I kind of think you may have bad LED lights.  Most are not exactly top tier quality.  After only a season or 2 the LED flashers on my 8930 show burnt out diodes and 1 is totally DOA.  They were from one of the 'respected' brands, not ebay cheapies.

 

Clip test light in each corner and see what happens before you pull anymore hair out chasing.  LED are nice and bright and in theory should last a long time but the quality is such a crap shoot.  If they are good they are great and bad is pure garbage.

[TB5288]

1 hour ago, HydroTek said:

That flasher unit does not need resistors

2 power sources to the flasher unit 
-- one constant -- "center" terminal
-- one from the headlight switch , first position -- outlying terminal 
-- dash indicator terminals are near the center power terminal
-- turn lights are the outer terminals 

If you get one light steady when you choose a direction
-- then you have the constant power source working
-- that steady light is from the mechanical selector switch in the unit 
-- should also work the other direction 

LED bulbs are polarity specific -- need to check the socket with a meter 

Check the voltages at the unit plug with a test light
-- you can also hot wire the lights without the unit to check the wiring 
-- go from the center terminal in the connector to the terminals near and see the lights work 

I've always known LED lights to be polar specific also. However, I recently bought some that were not. Made me wonder if something had changed with them.

[HydroTek]

49 minutes ago, TB5288 said:

I've always known LED lights to be polar specific also. However, I recently bought some that were not. Made me wonder if something had changed with them.

Diodes are one way, that is not gonna change

-- but there are driver circuits used that control the power draw on the diodes these days -- since automotive (tractor) battery power varies quite a bit thru the voltage range

-- diodes are voltage specific
11-16 volts will not do for a diode

The driver circuit allows the LED light to work at various voltage inputs and still have the same output 
-- also this allows pulsing of the diode to extend the life when over driving with power 

So in  a nut shell -- pulsed power is better than constant in several ways 

[sd186man]

Got hazards working today, still no turn signals but I don’t need them. Several issues, couple connectors were broken so the terminal was pushed back and not making connection, leds all work but polarity was backwards on one. What I called resistors are actually an inline flasher at each bulb, it works so I’m leaving them in for now. All four lights flash when the turn signal is turned either way or light switch is in hazard position.  Thanks to everyone for the help 

[brahamfireman]

6 hours ago, sd186man said:

Got hazards working today, still no turn signals but I don’t need them. Several issues, couple connectors were broken so the terminal was pushed back and not making connection, leds all work but polarity was backwards on one. What I called resistors are actually an inline flasher at each bulb, it works so I’m leaving them in for now. All four lights flash when the turn signal is turned either way or light switch is in hazard position.  Thanks to everyone for the help 

I'm guessing the lights all flash in turn signal mode because one side is supposed to be on steady when turn signal is activated.  Pull that flasher thing out and I bet the turn signals work correctly.

[HydroTek]

You can hear the flasher box relay work -- even if there are no lights connected 

just need a ground and one of the power wires I mentioned earlier 

Your flasher box metal or is it plastic ?

white, black , or silver ??

[sd186man]

2 hours ago, brahamfireman said:

I'm guessing the lights all flash in turn signal mode because one side is supposed to be on steady when turn signal is activated.  Pull that flasher thing out and I bet the turn signals work correctly.

No doubt you are correct, I forgot one side is steady when the other flashes

[sd186man]

42 minutes ago, HydroTek said:

You can hear the flasher box relay work -- even if there are no lights connected 

just need a ground and one of the power wires I mentioned earlier 

Your flasher box metal or is it plastic ?

white, black , or silver ??

Black plastic

[HydroTek]

could be either way on the black

white would be the mechanical clock motor

metal is the heavy duty electronic

Turn the flashers on or select a direction and smack the box on the side with a screw driver handle 

Do you have the 2 power wires to the box that I mentioned ?

[sd186man]

4 hours ago, HydroTek said:

could be either way on the black

white would be the mechanical clock motor

metal is the heavy duty electronic

Turn the flashers on or select a direction and smack the box on the side with a screw driver handle 

Do you have the 2 power wires to the box that I mentioned ?

Yes, I believe this flasher will work with no load

[HydroTek]

2 minutes ago, sd186man said:

Yes, I believe this flasher will work with no load

I know the flasher will work without load -- was just trying to get others to know that also 

Check your power going to the flasher
-- that system while it looks complicated -- is not at all 

if we had pictures working -- I have a new flasher here that I could demonstrate