修车的时候，避免不了接导线，有时候没有条件使用U型端子压接，这时候需要手工进行接导线，那么如何尽可能的减小电压降，保证接导线的质量呢？
线束返修时，接导线的步骤：文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
1、用剪刀在电线先端约5cm处剥皮。文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
2、剥皮之后的芯线部分如右图那样把芯线散开，另一根电线也同样作业。文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
3、把两根剥皮的电线芯线部分交叉，交叉处约芯线的一半。文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
4、用左手的拇指和食指和右手的拇指和食指把交叉的芯线卷起来（左右手卷的方向是相反的）。文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
5、卷完芯线后露出的芯线头用剪子剪掉，结完的结合长度在3cm以上。文章源自线束工程师之家-https://www.suncve.com/how-to-connect-wires-when-wiring-engineers-repair-cars/
6、电线太粗的话（1.25以上的电线），应把芯线剪去1/2后再做结合。
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