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Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i
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So my 10 speed DuraAce Di2 wiring harness just went bad last week right before a race. Apparently Shimano doesn't make any replacement parts for the 10 speed Di2 and these are super hard to find. Anyone know where I might be able to locate one? Shimano part number is SM-EW-79a-i

Thanks so much!!

Eric
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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Crickets!! Anyone...anyone? Bueller??
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [goodboyr] [ In reply to ]
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Thanks...that's not the correct part though. Lots of different part numbers that look alike. The SM-EW-79A-I is tri specific.
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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echebi wrote:
Thanks...that's not the correct part though. Lots of different part numbers that look alike. The SM-EW-79A-I is tri specific.

Whoops...sorry. Best to get your soldering iron out, then.
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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I kn ow its not teh same but maybe?
I have NIB SM-EW79A-E
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [beaker] [ In reply to ]
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I appreciate it. The 79A-E is the road version and the 79A-I is the tri version. Won't work. thanks for trying!!
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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Have you found a wire set? I have one brand new in the box here
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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echebi wrote:
So my 10 speed DuraAce Di2 wiring harness just went bad last week right before a race. Apparently Shimano doesn't make any replacement parts for the 10 speed Di2 and these are super hard to find. Anyone know where I might be able to locate one? Shimano part number is SM-EW-79a-i

Thanks so much!!

Eric
i sold mine a few years ago. keep in mind there is an SM-EW79A-I and an SM-EW79A-I-2. the latter had longer wires. the packaging might be the same (can't remember). shimano made a change as it was hard to successfully route some bars where the wires were 100% internal (i.e. up the spacer stack).
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [tetonrider] [ In reply to ]
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Thanks for the info. I knew there was a difference between the A-E and the A-I (road vs. TT), but didn't know there was a longer version too. I have the Shiv and everything is internally routed.
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [trimagic] [ In reply to ]
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I haven't found the wire yet. Do you have a picture of the box your harness is in? I'll send it over to my bike shop and ask them if it will work. How much are you looking to get for the wire?

Thanks so much!!

Eric
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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I am sure this is what you are looking for, the SM-EW79A-I with the 4 plugs for the shifters but I don't seem to be able to attach my actual pictures to this message. I am asking for 300 USD shipping included w/tracking number for the USA
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [echebi] [ In reply to ]
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Hi, Don't know if you have got your harness yet, but I am selling one here
http://www.ebay.com.au/itm/Shimano-Dura-Ace-Di2-A-Junction-Wire-Kit-SM-EW79A-I-Time-Trial-/252161695315?hash=item3ab6021e53:g:9OkAAOSwYHxWIjwA
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [trimagic] [ In reply to ]
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trimagic wrote:
I am sure this is what you are looking for, the SM-EW79A-I with the 4 plugs for the shifters but I don't seem to be able to attach my actual pictures to this message. I am asking for 300 USD shipping included w/tracking number for the USA
$300 for a junction box? what a snake

the world's still turning? >>>>>>> the world's still turning
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [Callin'] [ In reply to ]
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1. Try finding that junction box brand new in box as the one I had for sale
2. I sold the two I had for 300 USD+shipping to some very happy people

Now go swim/bike /run and stop ranting
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [trimagic] [ In reply to ]
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trimagic wrote:
1. Try finding that junction box brand new in box as the one I had for sale
2. I sold the two I had for 300 USD+shipping to some very happy people

Now go swim/bike /run and stop ranting

It's all about supply and demand, right?
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Re: Shimano 10 Speed Dura Ace Di2 Wiring Harness needed! SM-EW-79a-i [pritchet74] [ In reply to ]
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I'm also looking for this specific part and struggling to find it. I've spoken with the bike shop that would be doing the install and they said SM-EW-79a-i-2 would also work (though it's a longer wire).

I've checked eBay, but nothing currently available.

Any leads would be greatly appreciated!
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