汽(qi)车(che)(che)电(dian)(dian)(dian)线(xian)(xian)束(shu)则是连接汽(qi)车(che)(che)各个电(dian)(dian)(dian)器(qi)与(yu)电(dian)(dian)(dian)子(zi)设备的(de)(de)重要部件(jian),在电(dian)(dian)(dian)源、开关(guan)、电(dian)(dian)(dian)器(qi)和电(dian)(dian)(dian)子(zi)设备之间(jian)传递(di)电(dian)(dian)(dian)信(xin)号,素有神经传递(di)和血液供给(ji)之称,是对汽(qi)车(che)(che)进(jin)行电(dian)(dian)(dian)信(xin)号控制的(de)(de)载(zai)体(ti)。汽(qi)车(che)(che)电(dian)(dian)(dian)线(xian)(xian)束(shu)是汽(qi)车(che)(che)电(dian)(dian)(dian)路的(de)(de)网络主体(ti),没有线(xian)(xian)束(shu)也就不(bu)(bu)存在汽(qi)车(che)(che)电(dian)(dian)(dian)路。 [1] 为了(le)便(bian)于安(an)装、维修，确(que)保电(dian)(dian)(dian)气(qi)设备能在最恶劣的(de)(de)条(tiao)件(jian)下工作，将(jiang)全车(che)(che)各电(dian)(dian)(dian)气(qi)设备所用(yong)的(de)(de)不(bu)(bu)同(tong)规格、不(bu)(bu)同(tong)颜(yan)色的(de)(de)电(dian)(dian)(dian)线(xian)(xian)通(tong)过合(he)理的(de)(de)安(an)排，将(jiang)其合(he)为一体(ti)，并用(yong)绝缘材料把电(dian)(dian)(dian)线(xian)(xian)捆扎成束(shu)，这样既完整，又可靠。

　　选(xuan)(xuan)(xuan)择汽车(che)(che)(che)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)束连接了(le)(le)汽车(che)(che)(che)开关、用(yong)(yong)电(dian)(dian)器、传感器、电(dian)(dian)源(yuan)及所有(you)的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)器与电(dian)(dian)子(zi)设备(bei)(bei)(bei),遍布在(zai)汽车(che)(che)(che)的(de)(de)(de)(de)(de)(de)(de)发(fa)动机(ji)舱(cang)、驾驶室内(nei)和驾驶室外。由于汽车(che)(che)(che)本身的(de)(de)(de)(de)(de)(de)(de)使用(yong)(yong)特(te)点,如(ru):它必须(xu)重复经(jing)历酷暑(shu)、寒冬、颠簸(bo)等恶劣的(de)(de)(de)(de)(de)(de)(de)环(huan)境和使用(yong)(yong)条(tiao)件,就决(jue)定了(le)(le)汽车(che)(che)(che)电(dian)(dian)器与电(dian)(dian)子(zi)设备(bei)(bei)(bei)的(de)(de)(de)(de)(de)(de)(de)技(ji)(ji)术要求,因此(ci)汽车(che)(che)(che)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)束的(de)(de)(de)(de)(de)(de)(de)技(ji)(ji)术要求主要是:电(dian)(dian)路的(de)(de)(de)(de)(de)(de)(de)正确性和连续(xu)性、能耐震(zhen)动、冲(chong)击、交(jiao)变湿热、高温(wen)、低温(wen)、盐雾和工(gong)业(ye)溶(rong)剂等。 [2] 1)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)截面积的(de)(de)(de)(de)(de)(de)(de)正确选(xuan)(xuan)(xuan)择车(che)(che)(che)上的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)气(qi)设备(bei)(bei)(bei)根据(ju)负载(zai)电(dian)(dian)流的(de)(de)(de)(de)(de)(de)(de)大小选(xuan)(xuan)(xuan)择所用(yong)(yong)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)的(de)(de)(de)(de)(de)(de)(de)截面积。长时间(jian)工(gong)作的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)气(qi)设备(bei)(bei)(bei)可选(xuan)(xuan)(xuan)用(yong)(yong)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)实(shi)际载(zai)流量的(de)(de)(de)(de)(de)(de)(de)60%;短时间(jian)工(gong)作的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)气(qi)设备(bei)(bei)(bei)可用(yong)(yong)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)实(shi)际载(zai)流量的(de)(de)(de)(de)(de)(de)(de)60%-100%。2)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)色标(biao)的(de)(de)(de)(de)(de)(de)(de)选(xuan)(xuan)(xuan)择为了(le)(le)便于识(shi)别和维修，电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)束中(zhong)的(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)线(xian)(xian)(xian)(xian)(xian)采(cai)用(yong)(yong)了(le)(le)不(bu)同的(de)(de)(de)(de)(de)(de)(de)颜色。为了(le)(le)在(zai)电(dian)(dian)路图中(zhong)标(biao)注方(fang)便，导(dao)线(xian)(xian)(xian)(xian)(xian)的(de)(de)(de)(de)(de)(de)(de)颜色均(jun)用(yong)(yong)字(zi)母表示，其代(dai)表的(de)(de)(de)(de)(de)(de)(de)颜色在(zai)各线(xian)(xian)(xian)(xian)(xian)路图中(zhong)均(jun)有(you)附(fu)注。