help! trapped at work!
Thread Starter
Seasoned Member
Joined: Sep 2008
Posts: 459
Likes: 0
From: ny (not the city)
Year: 1991
Model: Cherokee
Engine: 4.0
my head lights wont turn on. I checked fuses and harnesses and the relays that i know of. the markers come on and the high beams come on when i hold the switch but no head lights or fog lights. help please.
Thread Starter
Seasoned Member
Joined: Sep 2008
Posts: 459
Likes: 0
From: ny (not the city)
Year: 1991
Model: Cherokee
Engine: 4.0
Thread Starter
Seasoned Member
Joined: Sep 2008
Posts: 459
Likes: 0
From: ny (not the city)
Year: 1991
Model: Cherokee
Engine: 4.0
uugggg now still no lights dash beam light and fog switch light went out and only come on when i hit high beams...but highs dont work. and if fog switch is off or on it lights up when i hit highs.
CF Veteran
Joined: Jan 2010
Posts: 1,087
Likes: 1
From: St Augustine Florida
Year: 1992
Model: Cherokee
Engine: 4.0
sounds like the headlight switch took a dump..... you CAN just hot wire the low beams to get home... you need a wire to run from battery to the plug on light.. Im not sure.. but about 90% if you hot wire one.. the other will light to...
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Thread Starter
Seasoned Member
Joined: Sep 2008
Posts: 459
Likes: 0
From: ny (not the city)
Year: 1991
Model: Cherokee
Engine: 4.0
alright now when i mess with the harness under air box the relay for timed head light shut off under dash buzzes like crazy then as i was unpluging harness by air box the lights came on! but...then the harness started smokeing.
Thread Starter
Seasoned Member
Joined: Sep 2008
Posts: 459
Likes: 0
From: ny (not the city)
Year: 1991
Model: Cherokee
Engine: 4.0
CF Veteran

Joined: Oct 2010
Posts: 2,150
Likes: 12
From: Ontario, Canada
Year: 1989 Laredo
Model: Cherokee
Engine: 4.0 L 6 Renix
Ive had that connector go south also (smokin) and trashed a few dimmer switches. I pulled the air box for extra room to work. cut out the connector and wired each pair direct.
Thread Starter
Seasoned Member
Joined: Sep 2008
Posts: 459
Likes: 0
From: ny (not the city)
Year: 1991
Model: Cherokee
Engine: 4.0
fiddled with wires enough to get the high beams to work so i could get home but the head light wires must be fried. as soon as i get them on harness starts smoking. so looks like i got some harness rewiring to do.
Thanks for the fast replys! u guys rock
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Thanks for the fast replys! u guys rock
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Senior Member
Joined: Mar 2010
Posts: 855
Likes: 1
From: Southern California
Year: 1989 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
buzzing relay could also meen it's not getting enough voltage, could be resistance between switch and relay, so a new relay wont fully solve the problem... just a thought


