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Solder or just crimp?

Posted By: Matt_Texas

Solder or just crimp? - Mon Apr 08 2019 03:00 PM

I got an EZ wire 21 mini. For my 1950 3100.

I want to do this right but I'm getting a lot of back and forth on whether to solder or not. Each argument sounds convincing too. Are factory wires soldered on new stuff?


I plan to start wiring with next pay check.
Posted By: Hotrod Lincoln

Re: Solder or just crimp? - Mon Apr 08 2019 03:06 PM

Factories don't necessarily do things "right"- - - -they choose to use the methods that will get a vehicle through its warranty period with a minimum of free repair work. If you're interested in your wiring lasting more than 8-10 years without problems, solder the connections. Crimped connections are "good"- - - -properly soldered ones are "better". A poor soldered connection isn't as good as a crimp done right.
Jerry
Posted By: Forty9

Re: Solder or just crimp? - Mon Apr 08 2019 03:15 PM

Better to solder now than wish you had after installing. I soldered as many connections as I could when I first got my 49 3100 in 1987 and while it was a PITA since wiring was already installed I haven't regretted all the crawling around to get it done. Done right you never have to worry about it again!
Posted By: Matt_Texas

Re: Solder or just crimp? - Mon Apr 08 2019 06:07 PM

I hadn't thought of them making the vehicle last just long enough for the warranty...

Solder needs to be resin 60/40?

Are some solder guns better than others?
Posted By: Fox

Re: Solder or just crimp? - Mon Apr 08 2019 06:07 PM

I did both and heat shrink wrapped all of them. Takes a long time but peace of mind.
Posted By: bartamos

Re: Solder or just crimp? - Mon Apr 08 2019 07:59 PM

You will find out that soldering is not all that easy. Orienting the wire while holding the terminal end in some clamp or other. You need two hands to solder. Then you will melt the insulation. The heating of the insulation and the solder on the joint, will cause the termination to be overly stiff and not flexible. Then getting solder on a place that won't allow terminal to be installed in a connector shell. Screwing up the connector shell trying to get it in there. You may have "cold" solder joints you won't see. Not to mention it will take you forever to finish.

A good crimp contact using a good crimp tool is plenty good for automotive. Solder is not necessary. The crimps will not come loose.
Posted By: beltfed

Re: Solder or just crimp? - Mon Apr 08 2019 08:31 PM

By now it should be obvious that both crimped and soldered connections have good and bad points. I have been soldering since I was 18 and in the army. Personally I don’t use a solder gun but a pencil type. Guns used improperly create too much heat which is bad. As far as crimping always use the type that has a ‘tooth’ to bite into the connector. Always put the tooth opposite the connector seam. The best connection for wire has two components, electo-mechanical. When possible I crimp a connector like the “Staycons” we see so often. Then I tin and heat with the pencil in a selected area and watch the solder ‘flow’ into the barrel of the connector. I would think you could learn some tricks from Utube.
Posted By: bartamos

Re: Solder or just crimp? - Mon Apr 08 2019 08:47 PM

Of course, this issue is a very old issue that never gets resolved.

We always allow the person to do what they wish after all the opinions are in. smile
Posted By: Hotrod Lincoln

Re: Solder or just crimp? - Mon Apr 08 2019 09:31 PM

I use the highest-wattage pistol grip solder gun I can find, use very small-diameter solder, and don't spend enough time on any particular connection to experience any of the heat-migrating problems our resident curmudgeon describes. Getting the connection HOT quickly and getting a good solder flow only at the terminal is the trick to making good low resistance connections without melting everything else in the neighborhood. I consider a 350-400 watt gun to be an abso9lute minimum, and I've got the tip up to full heat before touching it to the connector.
Jerry
Posted By: bartamos

Re: Solder or just crimp? - Mon Apr 08 2019 09:40 PM

If you mean me, Yes pot, I am black.


Posted By: Hotrod Lincoln

Re: Solder or just crimp? - Mon Apr 08 2019 10:20 PM

Hey, I can't handle the load of being the only bad-tempered old coot on the forum all by myself!
LOL!
Jerry
Posted By: beltfed

Re: Solder or just crimp? - Mon Apr 08 2019 10:51 PM

Sorry Bartamos, I think Jerry was reaching out to me since I stated I never use a solder gun. I know he can rebuild a carb through the tail pipe, but I seriously doubt he has joined more connections with solder than I. That is, if he didn’t use solder instead of gaskets
to button up all the motors he has built.😜
“We now return you to the regularly scheduled program”.
Posted By: 52Carl

Re: Solder or just crimp? - Tue Apr 09 2019 01:14 AM

So what y'all are telling me is that I need to remove all of the wire nuts from my Romex wiring harness? smile
Carl
Intelgentuli gluteus.
Posted By: bartamos

Re: Solder or just crimp? - Tue Apr 09 2019 02:26 AM

You are AD-D
Posted By: Fox

Re: Solder or just crimp? - Tue Apr 09 2019 04:18 AM

I soldered mine because the crimps were open (no plastic caps) and I figured, since it was open, I may as well solder them before I shrink wrap. It works for me.
Posted By: Shakey61

Re: Solder or just crimp? - Tue Apr 09 2019 04:53 AM

If you can, do both. With a little practice, you can solder an already-crimped wire without melting the plastic insulator on the crimp terminal. I personally prefer a 40-Watt pencil-type iron to a gun...easier for the fine work.

Being able to solder well is a handy skill to have. Either have someone competent teach you, or find a good video on YouTube.

My first two weeks of Army electronics school was soldering. Two weeks. I already had my college degree by then, so I was bored out of my mind. I was making little solder sculptures of soldiers raking the grass, picking up butts, etc. I didn't win points with my instructors with that.

-Kevin
Posted By: moparguy

Re: Solder or just crimp? - Tue Apr 09 2019 12:14 PM

Originally Posted by 52Carl
So what y'all are telling me is that I need to remove all of the wire nuts from my Romex wiring harness? smile
Carl
Intelgentuli gluteus.



WAIT, you used wire nuts??? A quick twist and couple wraps with Dollar store duct tape works just fine smile
Posted By: Volfandt

Re: Solder or just crimp? - Tue Apr 09 2019 12:55 PM

Man, I best be redo'ing the trouble free crimp connections on my 20 yr old truck and while I'm at it those those 50+ yr old crimps on my 2ea Wheel Horses too....
Funny, the wiring on my 49 3100 is chafeing away and yet there's no problems with the crimp connections.....

All that said, a properly crimped connection, like a properly soldered connection will last most of us.

Wire nuts? sometimes you fell like a nut, sometimes you don't LOL
Posted By: Rusty Rod

Re: Solder or just crimp? - Tue Apr 09 2019 12:58 PM

What's wrong with using wire nuts and tape? I used them when I was putting my $100 wire harness together ( the one that I have $300 into). Of course I removed them later when everything was working ok. I did not use romex, but I did use part of an extension cord for my tail lights.
Posted By: Matt_Texas

Re: Solder or just crimp? - Tue Apr 09 2019 07:04 PM

I'm finding that if a crimp is done properly... it lasts. And the same with soldering but if either is done wrong it's a failure.

And going back to factory warranties and things mafe to last only so long... do the crimps ever fail or is it the cheap electrical component that breaks?
Posted By: EdPruss

Re: Solder or just crimp? - Tue Apr 09 2019 07:10 PM

One of the issues with crimping only, is corrosion from road water and dirt/salt. Once a crimped joint becomes intermittent, the hunt goes on. Remember, NO acid core solder!

Ed
Posted By: Matt_Texas

Re: Solder or just crimp? - Thu Apr 11 2019 05:52 PM

Ok, after reading several different forums, sites, rants etc on this topic I'm going to go with just a good quality crimp.

I think I have the tools narrowed down.

How do you guys feel about the Klein 1005 or 1006? and do I need a Jaw style crimper for plug terminals?

Double walled heat shrink sounds like the best and I have a new heat gun for them too.

I'm not familiar with all the different brands of terminals and connectors.... what should I look for?
Posted By: Gord&Fran

Re: Solder or just crimp? - Thu Apr 11 2019 07:12 PM

Get a ratcheting crimper. Watch this video: https://www.youtube.com/watch?v=kjSGCSwNuAg
Posted By: BC59

Re: Solder or just crimp? - Thu Apr 11 2019 11:21 PM

Duraseal Heat Shrink Wire Connectors is what G.M. has us use for wire to wire splices.
Posted By: bztguy

Re: Solder or just crimp? - Fri May 10 2019 01:51 AM

I do a combination of both. If it's a connection that's going to be exposed to harsh environment (water, road salt, grime, engine compartment) I solder it and apply NO-OX grease to the solder joint and then heat shrink it. If it's something simple like under the dash I crimp it.
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