Engine wiring harness nightmare
multipersonality disorder
Joined: Feb 2002
Posts: 5,656
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From: so. cal
Originally Posted by sunshine
You know guys - it one thing to advocate proper crimping and soldering techniques, and another to actually tell us what these proper techiques are, or where we can get information about them. I am very interested in learning how to propely run a harness and its connections and terminations, but I am not in the engineering field so I can only learn from my own mistakes and from sources such as this forum.
So, dont tell us that there are techiqes out there. We know that, were not stupid. Instead tell us what they are and how to implement them. Tell us what a proper crimping tool is, tell us what braizing is and how to do it, tell us what a proper type is solder is for automotive electric applications, etc... I buy my stuff at radio shack...you know why? Because I dont know better. So, were ready to listen.
-a
(eagerly awaiting for someone to tell me to search - sarcasm)
So, dont tell us that there are techiqes out there. We know that, were not stupid. Instead tell us what they are and how to implement them. Tell us what a proper crimping tool is, tell us what braizing is and how to do it, tell us what a proper type is solder is for automotive electric applications, etc... I buy my stuff at radio shack...you know why? Because I dont know better. So, were ready to listen.
-a
(eagerly awaiting for someone to tell me to search - sarcasm)
i've seen good and bad crimp jobs and good and bad twist jobs.
whenever i use the butt splices, here's what i do:
1) crimp
2) solder
3) heat shrink
4) heatshrink again with an adhesive-lined heatshrink tube--water tight, guranteed for pretty much uhhhhh....ever
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Joined: Feb 2004
Posts: 5,721
Likes: 3
From: Coldspring TX
Originally Posted by GUITARJUNKIE28
i've seen good and bad crimp jobs and good and bad twist jobs.
whenever i use the butt splices, here's what i do:
1) crimp
2) solder
3) heat shrink
4) heatshrink again with an adhesive-lined heatshrink tube--water tight, guranteed for pretty much uhhhhh....ever
whenever i use the butt splices, here's what i do:
1) crimp
2) solder
3) heat shrink
4) heatshrink again with an adhesive-lined heatshrink tube--water tight, guranteed for pretty much uhhhhh....ever
Your very first picture tells me that you haven't been trained in proper wiring techniques- there is WAY too much stripped wire hanging out of the butt splice after the crimp. It makes for a weak connection if any flexing at all occurs in the harness.
Second, burned wiring insulation is a no-no...
Third, the crimp indentation is supposed to be on the other side of the splice window, where the metal is solid (the top of the crimp has the joint where the two sides of the splice meet- a weak spot, if you will). On most of them, anyway...
No reason whatsoever to heat shrink it twice- that makes that much more wiring you have to cut out when you need to repair it again...
Like I said, trying to educate
multipersonality disorder
Joined: Feb 2002
Posts: 5,656
Likes: 0
From: so. cal
the extra wire hanging out of the splice was so i didn't have a big ball of flaming insulation when i soldered it. it still burned the end a little, but that's not the end of the world. the second piece of heat shrink is rigid, so there is no flexing.
i appreciate it, and as soon as a connection like this ever fails, i'll pm you. but until then, 100% success rate is pretty hard for me to argue with.
i appreciate it, and as soon as a connection like this ever fails, i'll pm you. but until then, 100% success rate is pretty hard for me to argue with.
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