Headlights
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CF Veteran
Joined: Jan 2012
Posts: 8,272
Likes: 1
From: Baltimore, MD
Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
My headlights are temperamental to say the least. They dont turn on when i pull the switch usually and they go on or off randomly when the switch is pulled. I just installed open beam headlights for my HIDs, but thia was happening before the new lights. Any ideas?
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Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
mine was doing this (flashing) a little while after I installed my conversion headlights and high wattage bulbs. What's happening is you're overloading the switch. Your fix is to install a relay (one for high beam, one for low beam) in the wiring harness for the headlights. Thay way the switch is only responsible for just activating the relay (< 1 amp), and the relay handles the load.
I chose to just buy a upgrade harness - came complete with relays and heavier gage wiring, and was 100% plug and play (literally). As a bonus your headlights will get brighter too!
This is the one - I think it's 10% or 20% off if you mention code "jeepforum"
http://www.eautoworks.com/Putco-H4--...s-PRD7540.aspx
I chose to just buy a upgrade harness - came complete with relays and heavier gage wiring, and was 100% plug and play (literally). As a bonus your headlights will get brighter too!
This is the one - I think it's 10% or 20% off if you mention code "jeepforum"
http://www.eautoworks.com/Putco-H4--...s-PRD7540.aspx
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
but your switch may be too damaged already if they don't even turn on. Common issue with the switch burning out with headlight upgrades
Newbie
Joined: Feb 2012
Posts: 23
Likes: 0
From: New York
Year: 2000
Model: Cherokee
Engine: 6 Cyl 4.0L
Open the back of the factory plug that the headlights plug into. The ground wire in mine was intermittent, but it was a ***** to figure it out. When realized what was happening and ran a new ground, everything worked.
Also, considering using one of those harnesses with a relay, the difference in light output from the factory harness to the battery directly with a relay is like night and day, sorry for the pun
Also, considering using one of those harnesses with a relay, the difference in light output from the factory harness to the battery directly with a relay is like night and day, sorry for the pun
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CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
I don't think I've done ether of my Cherokee's, but I can tell you it's shirly no fun.
Pretty sure there is a button, maybe on the top, or on the bottom of the switch you push in that releases the **** so you can pull it out. There is no room and it seems imposable, just work at it easy. Check the plug, it might be your problem. Guess I'd clean it well and apply dielectric grease. It passes allot of current if you don't go with a relay.
We don't have Advance auto parts here, I usually go to Napa. I'm not sure but it seems they maintain a higher level of quality. Your life might depend on that switch not leaving you with no light with a cliff or something right there!
Pretty sure there is a button, maybe on the top, or on the bottom of the switch you push in that releases the **** so you can pull it out. There is no room and it seems imposable, just work at it easy. Check the plug, it might be your problem. Guess I'd clean it well and apply dielectric grease. It passes allot of current if you don't go with a relay.We don't have Advance auto parts here, I usually go to Napa. I'm not sure but it seems they maintain a higher level of quality. Your life might depend on that switch not leaving you with no light with a cliff or something right there!
Thread Starter
CF Veteran
Joined: Jan 2012
Posts: 8,272
Likes: 1
From: Baltimore, MD
Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
Originally Posted by DFlintstone
I don't think I've done ether of my Cherokee's, but I can tell you it's shirly no fun.
Pretty sure there is a button, maybe on the top, or on the bottom of the switch you push in that releases the **** so you can pull it out. There is no room and it seems imposable, just work at it easy. Check the plug, it might be your problem. Guess I'd clean it well and apply dielectric grease. It passes allot of current if you don't go with a relay.
We don't have Advance auto parts here, I usually go to Napa. I'm not sure but it seems they maintain a higher level of quality. Your life might depend on that switch not leaving you with no light with a cliff or something right there!
Pretty sure there is a button, maybe on the top, or on the bottom of the switch you push in that releases the **** so you can pull it out. There is no room and it seems imposable, just work at it easy. Check the plug, it might be your problem. Guess I'd clean it well and apply dielectric grease. It passes allot of current if you don't go with a relay.We don't have Advance auto parts here, I usually go to Napa. I'm not sure but it seems they maintain a higher level of quality. Your life might depend on that switch not leaving you with no light with a cliff or something right there!
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