Wiring Harness Plastic Sheathing? |
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Wiring Harness Plastic Sheathing? |
TINKERGINEERING |
Jun 6 2024, 06:26 PM
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#1
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Member Group: Members Posts: 207 Joined: 15-March 20 From: Sierra Madre, CA Member No.: 24,031 Region Association: Southern California |
Currently working on the wiring harness and found a couple wires in desperate need of replacement but they go through this plastic sheathing on the harness. Has anybody replaced wires through this sheathing? Should I just pull the wires out and try and jam them back in? I was also thinking I could just replace the sheathing, because it is 50 years old now, but how would I put new sheathing back on?
Thanks so much Attached thumbnail(s) |
Superhawk996 |
Jun 8 2024, 11:38 AM
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#2
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914 Guru Group: Members Posts: 6,464 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Spend some time on YouTube learning how to de-pin connectors
https://youtu.be/Vt_rAIKPlWA?si=2n7Jm-KKKMoxBn8Q The ability to de-pin connectors is a game changer and will allow you to run wiring through Raychem sleeve without worrying about fitting the connectors through. After the wiring is pulled through, re-pin the connectors. 914 connectors are very easy to de-pin vs other more modern connectors. Use of spit convolute and the ability to put it on wiring harnesses without connectors having to be removed is its only redeeming characteristic. |
TINKERGINEERING |
Jun 8 2024, 03:15 PM
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#3
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Member Group: Members Posts: 207 Joined: 15-March 20 From: Sierra Madre, CA Member No.: 24,031 Region Association: Southern California |
Spend some time on YouTube learning how to de-pin connectors https://youtu.be/Vt_rAIKPlWA?si=2n7Jm-KKKMoxBn8Q The ability to de-pin connectors is a game changer and will allow you to run wiring through Raychem sleeve without worrying about fitting the connectors through. After the wiring is pulled through, re-pin the connectors. 914 connectors are very easy to de-pin vs other more modern connectors. Use of spit convolute and the ability to put it on wiring harnesses without connectors having to be removed is its only redeeming characteristic. so the spade ends that go into them will fit through just fine? thats the only thing Im worried about |
SirAndy |
Jun 8 2024, 06:16 PM
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#4
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Resident German Group: Admin Posts: 41,802 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
so the spade ends that go into them will fit through just fine? thats the only thing Im worried about You may have to remove the spade connectors on the ends but you can re-crimp them easily with a good crimping tool. There's also no need to cut the connectors off at all, you can undo the factory crimp if needed. (IMG:style_emoticons/default/bye1.gif) |
windforfun |
Jun 8 2024, 06:46 PM
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#5
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Senior Member Group: Members Posts: 1,937 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None |
so the spade ends that go into them will fit through just fine? thats the only thing Im worried about You may have to remove the spade connectors on the ends but you can re-crimp them easily with a good crimping tool. There's also no need to cut the connectors off at all, you can undo the factory crimp if needed. (IMG:style_emoticons/default/bye1.gif) Undoing the crimping will usually leave a damaged wire. Usually, but not always. This is poor workmanship. Crimp, solder, & then cover with shrink tubing. This is how Mercedes does it. Oh & BTW, don't cut any strands. Crimping alone isn't really quality. |
Superhawk996 |
Jun 8 2024, 11:20 PM
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#6
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914 Guru Group: Members Posts: 6,464 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Crimp, solder, & then cover with shrink tubing. This is how Mercedes does it. Oh & BTW, don't cut any strands. Crimping alone isn't really quality. Please be careful with this advice as it is a misrepresentation of the approved Mercedes repair procedure. Crimping alone is standard practice in automotive wiring for new construction of harness. Yes, there are instances where Mercedes authorizes a solder repair in the field, but they are not done with old fashioned soldering iron, and shrink tubing. |
windforfun |
Jun 9 2024, 07:53 PM
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#7
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Senior Member Group: Members Posts: 1,937 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None |
Crimp, solder, & then cover with shrink tubing. This is how Mercedes does it. Oh & BTW, don't cut any strands. Crimping alone isn't really quality. Please be careful with this advice as it is a misrepresentation of the approved Mercedes repair procedure. Crimping alone is standard practice in automotive wiring for new construction of harness. Yes, there are instances where Mercedes authorizes a solder repair in the field, but they are not done with old fashioned soldering iron, and shrink tubing. This is as clear as mud. So what do you recommend for a quality repair? Standard practice? These days standard practice is whatever is the least expensive. And what kind of soldering tool would you use? What I recommended is what Mercedes does. Look at what's in a 300E. I would post some pics if I still had the car. Please prove me wrong. I have an open mind, if I can still find it. Enjoy your evening. (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/lol-2.gif) |
Superhawk996 |
Jun 9 2024, 10:20 PM
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#8
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914 Guru Group: Members Posts: 6,464 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
This is as clear as mud. So what do you recommend for a quality repair? Standard practice? These days standard practice is whatever is the least expensive. And what kind of soldering tool would you use? What I recommended is what Mercedes does. Look at what's in a 300E. I would post some pics if I still had the car. Please prove me wrong. I have an open mind, … Crimping is standard practice for automotive wiring not due to cost but because it provides a superior connection. A crimped connection is far more robust to the vibration that is ever present in automobiles. Don’t believe me - take a look at NASA documents or how wiring harness are fabricated at the highest levels of Motorsport such as F1. I don’t want to hijack this thread so please reference this link for more info and the link to the NASA document . http://www.914world.com/bbs2/index.php?sho...amp;pid=2991842 With respect to Mercedes approved soldering technique: per my previous post, Mercedes recommends a Raychem solder sleeve, not a soldering iron. The reason for this is because the Raychem solder sleeve precisely controls how much solder is applied. This is to minimize the wicking of solder up into the wiring strands and to limit the possibility of thermal damage to insulation via a standard soldering iron. Note: Mercedes vehicles from 90s (including 300E’s) also used wiring with biodegradable insulation that has a well documented history of premature cracking and massively accelerated, catastrophic deterioration so I wouldn’t necessarily consider everything Mercedes does with their wiring to be a gold standard of any sort. |
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