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Discussion Starter #1
So we've had our first YJ for a whole day! We managed to get a couple of small issues fixed (mainly just bulbs and cleaning contacts) but the turn signals won't work. Here's what we have:

1. Emergency lights work perfectly
2. Brake lights work too
3. When turn signal set to right the right brake light doesn't light (I think that's normal) but it also doesn't flash. Front right turn signal doesn't come on either.
4. Same thing left.

From what I can make out I'm going to need to replace the multifunction switch. Is it not repairable? Anything I should try before I order that?
 

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Swap your flashers with each other, located top of the fuse block by the emergency brake pedal to rule out the flasher unit. Do you have standard bulbs or LED's?
 

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Discussion Starter #3
Just regular bulbs right now but I’ve ordered LED brake / reverse lights, which I should have in a couple of weeks.
 

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Just regular bulbs right now but I’ve ordered LED brake / reverse lights, which I should have in a couple of weeks.
With the LED lights, you'll need electronic flashers, available at any auto parts store. They function regardless of what bulbs you are using.
 
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Discussion Starter #5
Okay, great, thank you! I also ordered new LED headlights. Are those plug & play or do I need to make other changes for those too?
 

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Discussion Starter #7
Thanks Rushwel, looking at the harness now. “Got it at last”, thank you!! I replaced the flasher relay it fixed it. We’re turn-signaling all over the place now. Thank you!!
 

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That harness Rushwal posted up is a "must have" upgrade for your YJ, It is built with heavier gauge wire and the separate relays and ran off your battery, sets you up to run any headlights you want, the high heat ceramic connectors are a little overkill for your LEDS, but are necessary if you ever want to run H4's. The beauty of the setup is that the relays are connected to your existing headlight switch and wiring, but puts less demand on your weaker stock wiring, you will be very happy, especially after your turn signal excusion. Glad you got that solved.
 
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Discussion Starter #9
Okay, understood, that’s awesome, thank you. I’m ordering the harness tonight.
 
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You'll probably want to run the LED headlights off a relay. I don't run LED headlights, but I do have a harness. Runs your headlights directly off your battery, and uses your stock switch. Easy install, and brightens up even stock lights.

https://www.amazon.com/gp/product/B07B9QQMMH/ref=ppx_yo_dt_b_asin_title_o07_s02?ie=UTF8&psc=1
After reading the reviews on this harness I WOULDN'T waste the money. Several folks reported that the actual wire gauge (not the thickness of the insulation) in that harness is smaller than stock and the wires weren't stripped before being crimped. It would be easy to build your own harness with actual 10 gauge wire with a relay(s) connected directly to the battery and stock headlight switch.
 

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After reading the reviews on this harness I WOULDN'T waste the money. Several folks reported that the actual wire gauge (not the thickness of the insulation) in that harness is smaller than stock and the wires weren't stripped before being crimped. It would be easy to build your own harness with actual 10 gauge wire with a relay(s) connected directly to the battery and stock headlight switch.
FWIW, I bought the one distributed by "Octane lighting" $33.00it was made from 12ga. wire, not the 16/18 found on stock harness, measured to fit exactly perfect. I normally solder all my wiring repairs, but this is one that I would still use over making up myself. The cost is still less than building your own.
 

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FWIW, I bought the one distributed by "Octane lighting" $33.00it was made from 12ga. wire, not the 16/18 found on stock harness, measured to fit exactly perfect. I normally solder all my wiring repairs, but this is one that I would still use over making up myself. The cost is still less than building your own.
A different manufacturer may be worth the money but not the Kaslight in that link.

That's just my opinion and you know what they are "Everyone has one just like A_ _wholes" LoL

I tend to build my own stuff so I know it's done right especially when it comes to electrical circuits. Just the wire and relay would cost what $20 and maybe $10 worth of loom. Would wire it in with a spare relay plug in the PDC, de-pin plugs, solder wires, re-pin plugs and it's done. Then again I have unlimited time to fiddle with things it gives me something to do. The life of a retiree
 
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I try to do the same thing, Except until the last two young-uns, (21 and 23) get out the door I can't retire, so that's why it takes me a month to finish a 4 hour project. LOL
 
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Discussion Starter #14
Well, I pulled the trigger too early and ordered that harness. I think it’s arriving today. We'll see how it goes.
 

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I tend to build my own stuff so I know it's done right especially when it comes to electrical circuits. Just the wire and relay would cost what $20 and maybe $10 worth of loom. Would wire it in with a spare relay plug in the PDC, de-pin plugs, solder wires, re-pin plugs and it's done. Then again I have unlimited time to fiddle with things it gives me something to do. The life of a retiree
I built my own headlight relay harness. It would have been a bit cheaper to simply buy a new one (that was well reviewed) and a whole lot less headaches.
That said, I like how my harness is wired way better than the aftermarket harnesses.
I ran new wires to new headlight plugs from the relays to the headlights. I have 12G wire from the battery to the relays and 16G from the relays to the lamps. FWIW, the wires don't heat up at all with high beams on and H4 Hella headlights.
I took the pic to show how I wired in a second horn, but you can get an idea of how it's wired at the relays. One relay for the low beams and the second relay for the high beams. I used as close a colored wire that I could find to match the stock wires, which I didn't remove, but aren't connected to the harness or lamps.
The green wire is the ground for the relays.

Good Luck, L.M.
 

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