汽(qi)車繼電器(qi)四根線的連接(jie)方(fang)法(fa)是，一(yi)(yi)腳接(jie)地，一(yi)(yi)腳連接(jie)至點火(huo)開關的啟動(dong)檔(dang)位，剩余(yu)兩(liang)腳中(zhong)，一(yi)(yi)腳接(jie)在常火(huo)線上，另一(yi)(yi)腳接(jie)在起(qi)動(dong)機的磁力開關上。

具(ju)體(ti)來說，這四根線(xian)(xian)(xian)(xian)(xian)有著(zhu)明確分工(gong)。其中兩條是控制線(xian)(xian)(xian)(xian)(xian)路(lu)，另外(wai)兩根分別是電(dian)(dian)(dian)(dian)源(yuan)輸(shu)(shu)入線(xian)(xian)(xian)(xian)(xian)路(lu)和(he)電(dian)(dian)(dian)(dian)源(yuan)輸(shu)(shu)出線(xian)(xian)(xian)(xian)(xian)路(lu)。當控制線(xian)(xian)(xian)(xian)(xian)路(lu)接(jie)(jie)(jie)通(tong)電(dian)(dian)(dian)(dian)源(yuan)，電(dian)(dian)(dian)(dian)源(yuan)輸(shu)(shu)入和(he)輸(shu)(shu)出線(xian)(xian)(xian)(xian)(xian)路(lu)就會連通(tong)，從而實(shi)現(xian)電(dian)(dian)(dian)(dian)源(yuan)的(de)轉接(jie)(jie)(jie)控制。像繼電(dian)(dian)(dian)(dian)器(qi)的(de)30引(yin)腳(jiao)作為電(dian)(dian)(dian)(dian)源(yuan)輸(shu)(shu)入，要(yao)連接(jie)(jie)(jie)蓄電(dian)(dian)(dian)(dian)池過來的(de)電(dian)(dian)(dian)(dian)源(yuan)；87引(yin)腳(jiao)是電(dian)(dian)(dian)(dian)能(neng)輸(shu)(shu)出端(duan)(duan)，連接(jie)(jie)(jie)用電(dian)(dian)(dian)(dian)器(qi)；86引(yin)腳(jiao)是搭鐵(tie)線(xian)(xian)(xian)(xian)(xian)路(lu)，連接(jie)(jie)(jie)車(che)輛(liang)車(che)體(ti)；86a引(yin)腳(jiao)是控制線(xian)(xian)(xian)(xian)(xian)路(lu)，連接(jie)(jie)(jie)車(che)輛(liang)控制開關的(de)輸(shu)(shu)出端(duan)(duan) 。此外(wai)，實(shi)際接(jie)(jie)(jie)線(xian)(xian)(xian)(xian)(xian)時(shi)通(tong)常將一腳(jiao)接(jie)(jie)(jie)至(zhi)電(dian)(dian)(dian)(dian)瓶的(de)正極(ji)，30A/87A的(de)引(yin)腳(jiao)連接(jie)(jie)(jie)到需要(yao)控制的(de)電(dian)(dian)(dian)(dian)器(qi)的(de)正極(ji)線(xian)(xian)(xian)(xian)(xian)上(shang)。

汽車(che)繼電器(qi)四根(gen)(gen)線的連(lian)接有著嚴格要(yao)求(qiu)和特定方式。準確(que)連(lian)接這四根(gen)(gen)線，能確(que)保(bao)繼電器(qi)正常(chang)發揮作(zuo)用(yong)，保(bao)障(zhang)汽車(che)電氣系統(tong)穩定運(yun)行，讓車(che)輛(liang)各(ge)項功(gong)能得以正常(chang)實(shi)現。