flashers don't stop on ih 686

Anonymous-0

Well-known Member
I recently acquired a really nice 1979 ih 686 tractor. However, it needs a few repairs. When I got the tractor, the only lights that worked were the two headlights on the fenders. I found a hole burned in the back of the turn signal switch/flasher unit. I replaced this switch and had flashers but still not the correct headlights. I have now replaced the main light switch and all of the lights work, but the flashers never stop flashing. I know that on other 666 and 686s that I am familiar with the flashers stop flashing when the main light switch is on the last position. I can't see where any of the wiring has been disturbed and I am wondering if they made a change to that flasher and keep them flashing all the time. If anyone out here is familiar with this situation I would appreciate any input. Thanks in advance.
 
Ours was as you mentioned. Position 1, flashers only. Position 2, headlights and flashers. Position 3, headlight and rear work light, no flashers.
 
I have a 1977 140 that had a bad switch when I got it. The switch was causing the battery to drain. Got a new switch. Found the new switch different than original and flashers would not turn off. I ended up installing a toggle switch in the flasher circuit so I could turn them off. I don't remember the exact details, but I think you could turn every thing off, but when any lights were on, the flashers were on.
 
I have worked on quite a few of those and there is usually rust on all the electrical. But if you have replaced the switch you must have a wire on the wrong place if you have an operators manual it might have a wirring diagram in it. Or just take one wire of at a time until you find which one runs to the flasher. There is one post that just has juice on the first setting and then it goes of on the second or third setting. My 1979 686 works that way.
 

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