Check your Ron Francis Harness

[Erik W. Treves]

Hello all from Mark 5 Beta land.....

I think I have seen a few posts on this - thought I would just bring this up to the top to make sure nobody else has to deal with this cause this caused me to lose 3 hours in my build and break open my "nice" wire routing.

This is NOT a Mark 5 issue - this is a RF harness issue and Factory Five has confirmed it - they have contacted RF and found and contained the quality escape - but the issue did go out to the field.

The connector in question is on the dash harness side of things - the failure mode is that with no turn request the turn signal flasher will be clicking as if there is a turn signal going, the right turn indicator will be steady green (not flashing).

All 3 recent BETA Mark 5's all had the same issue from the RF harness..... so any kit containing a RF harness in that same grouping (since potentially Dec) MAY have this issue... not sure how many people are working at RF.

the fix is to either pull the weather pack connector apart or just cut the wires and move them around on the dash side.

here is a picture of the mis-pinned plug

https://thefactoryfiveforum.com/attachment.php?attachmentid=211360&d=1741702662

[rich grsc]

That’s unfortunate. I advise ALWAYS check the connections for same color in, same color out.
i guess i got that habit when I built my own connectors for the dash and turn lights

[Jeff Kleiner]

Mine was the same as Erik's and Ron's so that makes it 100% on the Mk5 Beta builds :(

https://thefactoryfiveforum.com/attachment.php?attachmentid=211370&d=1741711762

Don't assume that the problem is only on late 2024 harnesses---exactly the same miswire was reported on ones that were delivered to the builders as far back as 2023:

https://thefactoryfiveforum.com/showthread.php?50723-Electrical-plug-question&highlight=employee

https://thefactoryfiveforum.com/showthread.php?50700-Turn-Signal-Hazard-wiring&highlight=harness

I encountered an error in a RF harness for a customer build a few years ago so since then I've made it a practice to lay the entire harness out before installation (usually on the living room floor which my wife REALLY appreciates ;)) and match up all of the plugs to make sure that everything flows through on wire color and connector shape. It's a whole lot easier to do it sooner rather than later after you start getting it in the car.

Jeff

211370

[Erik W. Treves]

thanks Jeff - good call!

[JohnK]

This is isn't the first time this has happened. I found an mis-pinned connector in my RF harness several years ago. I agree with Rich - checking for the same color wires on either side of the connector should be standard practice when assembling.

[DavidW]

Happened to me in 2016. Since I have always checked those connectors.
https://thefactoryfiveforum.com/attachment.php?attachmentid=79071&d=1515684826

[PNWTim]

Winner winner, chicken dinner! Looks like I have the unlucky privilege of an erroneous wiring loom, My kit was delivered in early December 2024:

211380

I am assuming I can simply de-pin and correct? And, also assuming I want to correct the shorter of the two harnesses (not sure it matters but it seems easiest).

[Jim Doak]

Well, at least the green wires are correct...

(I just check my plug and it's correct, but my kit was delivered July 26th.)

[PNWTim]

For anyone interested, this is a Metri Pack connector and requires this tool to de-pin the terminals:

https://www.amazon.com/Delphi-Twist-Metri-Pack-Terminal-Removal/dp/B07K55BT59/ref=sr_1_3?dib=eyJ2IjoiMSJ9.Iqheup_FkJpGQ6cIXDnWuA W5XjehDGLV_uhT3iCXSDpUNr_nnTmb2yTCl6kYRd188vM8EEDe BrVO4zblRUUGFInUK2LTptNywDOiLywLfjKr1-SguzGWtj3gXALeGa2Xhj3vf-IA0I10rECRCDtNuw.KgxhiafwK6XapJpK4OrSqpDHIbTF1BkrF BUpjHXoxaQ&dib_tag=se&hvadid=631488635175&hvdev=c&hvlocphy=9032884&hvnetw=g&hvqmt=e&hvrand=90478849477219530&hvtargid=kwd-297228606128&hydadcr=5708_13276435&keywords=delphi+12094429&mcid=da03f1869f6c384697eb80ff18dfd3b7&qid=1741723927&s=automotive&sr=1-3

[Tooth]

Had that on two parts of my rf harness. I got my kit in 2022. Nothing new.

[Wizbangdoodle]

Had this exact problem. Must be a newbie on the assembly line. RF sent me a de-pin tool like the one PNWTim linked to.

[cdurbin328]

I had a similiar issue with the RF wiring on my MK4 build last year. Was having issues with the fuel pump and turned out that the RF fusebox was wiring incorrectly.

[rponfick]

Hello all from Mark 5 Beta land.....

I think I have seen a few posts on this - thought I would just bring this up to the top to make sure nobody else has to deal with this cause this caused me to lose 3 hours in my build and break open my "nice" wire routing.

This is NOT a Mark 5 issue - this is a RF harness issue and Factory Five has confirmed it - they have contacted RF and found and contained the quality escape - but the issue did go out to the field.

The connector in question is on the dash harness side of things - the failure mode is that with no turn request the turn signal flasher will be clicking as if there is a turn signal going, the right turn indicator will be steady green (not flashing).

All 3 recent BETA Mark 5's all had the same issue from the RF harness..... so any kit containing a RF harness in that same grouping (since potentially Dec) MAY have this issue... not sure how many people are working at RF.

the fix is to either pull the weather pack connector apart or just cut the wires and move them around on the dash side.

here is a picture of the mis-pinned plug

https://thefactoryfiveforum.com/attachment.php?attachmentid=211360&d=1741702662

Is this the way it should look? Mk5 harness delivered 4-7-2025. I am electrically challenged and confused as to what is wrong, and what is the solution.
Thanks, Ralph

[nuhale]

Is this the way it should look? Mk5 harness delivered 4-7-2025. I am electrically challenged and confused as to what is wrong, and what is the solution.
Thanks, Ralph

Yours looks correct Ralph. Just follow the color thru the connection.

[jengum]

The color coding on the connectors needs to be continuous thru the plug on opposite sides...ie...blue to blue, green to green, grey to grey, etc. Your attached thumbnail looks correct but check the other plug connections in the RF harness for color coding continuity.

[PMD24]

Yours looks correct Ralph. Just follow the color thru the connection.

In my opinion it is not correct. The color of the wires in and out of the connector should match. In yours (like mine), they are reversed. If you speak with Factory Five they will tell you that you have two options. 1) Using a proper tool you can remove the pins from the dash harness side and replace them in the proper order. Or, 2) call Ron Francis. If you call Ron Francis they will tell you to not mess with the pins and send a photo. They will them send you a new harness and a shipping ticket to return the old one.

Pat

Edit: I was looking at the larger photo. The smaller photo is in fact ok.

[Rian_Colorado]

My harness (sent in December) was in correct. Knew to even look for it thanks to the forum.

FYI, RF sent me a new dash section of the harness. Pretty simple process. Could have been a hassle if it was installed in the car though!

Rian

[PNWTim]

I posted in this thread earlier and the response I received from RF when I called them was "here's the part number for the tool to de-pin the connector". There was no offer of a new harness or replacement. I purchased the tool and swapped them but need to mess with it a little more as those Metri Packs don't like to be de-pinned. It flattens the retaining pins so they don't secure the wire as well after removal. Just an FYI.

[rich grsc]

In my opinion it is not correct. The color of the wires in and out of the connector should match. In yours (like mine), they are reversed. If you speak with Factory Five they will tell you that you have two options. 1) Using a proper tool you can remove the pins from the dash harness side and replace them in the proper order. Or, 2) call Ron Francis. If you call Ron Francis they will tell you to not mess with the pins and send a photo. They will them send you a new harness and a shipping ticket to return the old one.

Pat
Look again, his is correct. It's the small picture

[PMD24]

Look again, his is correct. It's the small picture

yep, you're right. I was looking at the bigger photo.

[MakoGT350]

Found this thread while looking for tips on de-pinning a connector I am working on.
Thought I would share here that I can confirm at least one occurrence of a new mis pinned connector issue on a MK5 - the four pin connector for the rear harness (with round pins) has the ground circuit and purple break circuits reversed on one side of the connector.

still need to find the right tool for de-pinning the connector...

[weendoggy]

Metri-Pack uses these: https://www.amazon.com/Delphi-Terminal-Removal-Metri-Pack-metri-Pack/dp/B07DD3PC8H/ref=sr_1_18?adgrpid=185880857506&dib=eyJ2IjoiMSJ9.rSAgumpG17BkCbAL52SJdXDkYZwjS4fIx fwy1y9wlL5KyRo9YoInLwxP_iTfmMzEEpR0COshb51fydVLVWU WrQCa_JMqqD0LHAzVLZL3MAXfSo_NOSvt3JWOqhD8ESKONfqFB Lt73D30ts9OMs4S969W-6KZdcpvS5LeB5Zy4GbrKn2pQjqU4SXmv9NKUjeRuwrFCnyFjW1 bcFplFROWR0fXCMvsJm56UMjOC_jllLxJqwnU4YbctpDgXb6Id 9AlBCdGerSc998NV1IGp2zQ6uQruhps5Drk-gD32vNcG4E.NvEefFa4L5XWejg9sUVd9w_2IOFrJoPFqMKIjOo dP88&dib_tag=se&hvadid=779542809984&hvdev=c&hvexpln=0&hvlocphy=9032127&hvnetw=g&hvocijid=3734059759887068210--&hvqmt=e&hvrand=3734059759887068210&hvtargid=kwd-410377780206&hydadcr=7483_13294060_47254&keywords=metri-pack+tool&mcid=3ed291c1c124309e96d7c501094ed004&qid=1767468520&sr=8-18

Weather Pack this: https://www.amazon.com/Fastronix-Weather-Pack-Removal-Tool/dp/B0051POYJ2/ref=sr_1_7?crid=3P7BLFAT7A7PO&dib=eyJ2IjoiMSJ9.lQeouAzy2bhJN2_FfI447d01VSe5ZQOND wMBCP7_Ul6TD7iVQ30V9UUTYPwgFjGUldc6HvFN02kc4KrLotk SzoMS-XstHwR5oTpNW5zFLgUEirRp_VcA3pYz-ihDWBu6P5wlxCljgc7Uzpvpsy1bcwEeIw2I2KiLSEbv1foy1jI Dlbac6ixO0CKUjRuJ0jRyX1q9CnHU_5B3UzX7eGOrrsQkro2Cw dT0Bg3L2r1IEmEo0frC-aKHozEZDtMVii6ulerSmebnPUbItoo58NLCl7k1dm1W0Tvsf5f QJbsTPmU.TiT3hxDDnzWhm5FoEhWCU-SRqqcUMomHsiTVTOfXBvQ&dib_tag=se&keywords=weather+pack+tool&qid=1767468738&sprefix=weather+pack+tool%2Caps%2C173&sr=8-7

[Myron Nelson]

Add me to the list. My rear harness to main harness wires were crossed between the fuel pump and fuel sender. My dum bass opened the connector to check continuity thinking that would tell me which half was bad. Continuity checked fine which really threw me off. I am
aghast that there is no quality control at assembly. That would be unheard of in aviation. My bad for having too much faith in the product.
MK5 delivered May25

[Myron Nelson]

As I was inspecting the plug to see if I could release the pins, one of the wires that I needed simply slipped out of the pin, apparently never having been crimped correctly. I decided to bypass the plug altogether and connect the two leads with a pair of insulated male/female spade connectors which I could strain relief together and separate if the need ever arises.

[rich grsc]

Over time those spade connectors can come loose

[Myron Nelson]

Thanks for the tip. I use aircraft grade terminals double bound for strain relief.