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Turn Signal Flasher with In-Line Fuse -- for LEDs maybe?

mrmolding

mrmolding

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If anyone has an idea why there is an inline fuse between the turn signal flasher connector and the flasher, I would appreciate any help. I'm replacing the wiring harness and wondering if I have not uncovered the reason yet. Not sure if there are LEDs somewhere I've not checked or if that matters. I thought you were supposed to use a different flasher for LEDs.
Any help is welcomed!

217.JPG
 
you dont have to replace the flasher for led's you install a resistor because the led makes far less resistance and the flasher will flash really fast, don't see any reason for a fuse , already one in the fuse block
 
Nevada dan said:
you dont have to replace the flasher for led's you install a resistor because the led makes far less resistance and the flasher will flash really fast, don't see any reason for a fuse , already one in the fuse block
Click to expand...
What about in a situation where the right turn signals work, but when the left turn signal is activated both parking lights flash at the same time?
 
Aron Gleason said:
What about in a situation where the right turn signals work, but when the left turn signal is activated both parking lights flash at the same time?
Click to expand...

So if that happens, how do you correct?
 
I had a problem similar to that, it was in the pigtail to the front turn park lamp
 
Nevada dan said:
I had a problem similar to that, it was in the pigtail to the front turn park lamp
Click to expand...
Good to know. With the lights off. The left taillight blinker works, with lights on the left taillight blinker won't work.
 
Aron Gleason said:
What about in a situation where the right turn signals work, but when the left turn signal is activated both parking lights flash at the same time?
Click to expand...

If wiring checks OK, try replacing signal switch in steering column. Switch can be a source for strange problems.
 
Carcinogen said:
If wiring checks OK, try replacing signal switch in steering column. Switch can be a source for strange problems.
Click to expand...
I've been told that. But was also told I needed the required led flashers for them to work. But I'll check the switch.
 
So any more thoughts about why someone put an inline fuse in my flasher?
 
I used an off the shelf modern flasher from Advance and did not not need to wire the resistors.
 
Well now I think I know why the PO put an inline fuse on the flasher. PO put LED bulbs in tail lights. I looked at an LED flasher I had from another car. Says so on flasher so maybe a precaution by PO. Issue possibly solved.

B518709E-E8A0-4D5F-892B-85D71E40FFE0.jpeg
 
Flashers are already fused protected into the fuse box on stock harness ( sharing some other circuits, like the Radio, tipically spliced from same flasher circuit ) and pretty sure also aftermarket options.

wondering is MAYBE that's a circuit added and spliced into the input for the flasher by a previous owner to get a keyed power to some aftermarket accesory? and maybe not really INSERTED to the existant flasher circuit ( between flasher and fuse box )
 
BTW, having an in line fuse for LEDs makes no sense. They suck less load than the regular bulbs so, in any case, the fuse could be a smaller rate than the existant one. Something like maybe 3-5 amps instead the 20 amps of the stock one. Sure the fuse is more in case of a short than the load itself of the bulbs
 
Nacho-RT74 said:
BTW, having an in line fuse for LEDs makes no sense. They suck less load than the regular bulbs so, in any case, the fuse could be a smaller rate than the existant one. Something like maybe 3-5 amps instead the 20 amps of the stock one. Sure the fuse is more in case of a short than the load itself of the bulbs
Click to expand...

Hmm. I sent the PO an email and he does not think he did it. About to put dash back together -- looks like I'll remove it for now. Thanks!
 
Nacho-RT74 said:
Flashers are already fused protected into the fuse box on stock harness ( sharing some other circuits, like the Radio, tipically spliced from same flasher circuit ) and pretty sure also aftermarket options.

wondering is MAYBE that's a circuit added and spliced into the input for the flasher by a previous owner to get a keyed power to some aftermarket accesory? and maybe not really INSERTED to the existant flasher circuit ( between flasher and fuse box )
Click to expand...

Actually, you helped me a few months ago about an extra wire hooked to the brake circuit. I found about three other taped wires and a few burned connectors in other places in the harness. So, over the past few months I've replaced everything, even the side marker pigtail connectors, backup lights, etc. and all new M&H harnesses. It should be back to stock without the changes made to it. A lot of the wiring was crusty, hard, and rusted. Not cheap, but I bought it and replaced it as I got funds. To start back to normal, I replaced all of the POs LED bulbs with the original incandescent style. So, I'm going to remove the inline fuse as well. Don't plan on driving it at night. Thanks for the help!
 
For LEDs you need a no load flasher like the one you show in your pic. The caveat is that you will need to reverse the polarity of the circuit. I just went through this on my conversion.
That inline fuse looks like it was added for the radio or something else.
 
I used a neutral polarity turn signal flasher with the flasher’s wire grounded to the ash tray frame. No inline fuses. Works fine. Plugs into the factory plug.
 
I just discovered the same inline fuse to the turn signal flasher on my original dash harness ('70 Super Bee). Seemingly the same uniquely looking fuse holder as in your picture. I have had the car since the mid-80s so I know that LED bulbs do not play into the picture. I plan to move it over to my new M&H harness just because.

Oh, and the flasher is factory original, correct date code, so I am guessing that the pigtail is also factory original.
 
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