Electrical system issue

[Hay Dude]

Massey 7495 Farm tractor
Has 4 way flashers
has turn signal stalk just like a truck
has 7 pin trailer plug
The turn signals over ride the 4 ways - a really nice feature.

a few days ago, I plugged my rear mower into the 7 pin plug and immediately noticed the right side of the mower and tractor signals don’t blink.
If I turn on the 4-ways, only the left side blinks.
If I turn on the left turn signal, it blinks properly.

Whether rear mower is plugged in or not, I only have a left turn signal.

Nothing works on the right side. No turn signal, or nothing when 4-ways are turned on.

Checked all fuses and found nothing
I replaced the flasher relay.
There’s also a left side and right side relay for turn signals. I swapped them and still only have left side signal.

 

[kirkawilson]

You might try spreading the pins very slightly to tighten the plug connections.

 

[Mike1955]

I agree with kirkawilson. It’s most likely a tighten up clean up issue. Anywhere you can sand any spray with contact cleaner try it. It might turn out to be an easy fix if you are one of the lucky pnes

 

[Hay Dude]

You might try spreading the pins very slightly to tighten the plug connections.

I agree with kirkawilson. It’s most likely a tighten up clean up issue. Anywhere you can sand any spray with contact cleaner try it. It might turn out to be an easy fix if you are one of the lucky pnes

You mean pins on relays plugged into fuse circuit board?

 

[garry1p]

If they all quit then four things have to be eliminated.
1. No 12VDV.
2. No ground.
3 All the bulbs burnt out.
4. The switch itself could have lost power.

Power comes from 1 or more fuses. Is power getting "to" the fuse and "through" the relay contacts?

Ground is common through the chassis (not likely) or individual wires back through a common connection.
Do you have a good ground at the bulbs?

Don't forget to check for voltage at the switch

 

[plowhog]

Are these 1157 incandescent bulbs or LED?

 

[Williy]

You can purchase a can of electrical cleaner for electronic parts
can't remember what the name is but you can probably get it from

https://www.digikey.com/en/products/filter/chemicals-cleaners/260?s=N4IgTCBcDaIKYBs4GMAuAnA9gOwJbIAIBnAB3QEMBPA5Jc7OdEAXQF8g

willy

 

[kirkawilson]

I was referring to the pins on your 7 pin plug. That connection might need some electrical spray cleaner.

 

[LouNY]

Is your Massey a 7 pin round connector?
european 7 round;

our HD 7 pin round;

and the other 7 pins;

All wired differently.