Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

h4 harness issues

Old May 28, 2013 | 10:04 AM
  #16  
black2000xj's Avatar
Thread Starter
Seasoned Member
 
Joined: Jan 2011
Posts: 493
Likes: 0
From: Grand Haven, Michigan
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Default

Originally Posted by EZEARL
Put your lo beam relay on the hi beam harness to check. Both relays are the same.

Wonder if anyone else besides us has had a problem with the hi beam relay? My lo beam one is fine. HOPE I didn't just jinx myself!

i didnt know ther was a difference...i will try switching them tonight when i get home to see
Reply
Old May 30, 2013 | 06:16 AM
  #17  
black2000xj's Avatar
Thread Starter
Seasoned Member
 
Joined: Jan 2011
Posts: 493
Likes: 0
From: Grand Haven, Michigan
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Default

ok guys bought 2 new relays from AA

i installed them and i still have no brights. I took both off, switched them around and got the same results

cleaned all the grounds, but i still cant get my brights to work. Do you think its the harness or the headlight itself?

As mentioned before, the high beams will work once in a while, id say about 10% of the time

any ideas? anything i should do..all the connections are made with die electric grease so i know water and dirt shouldnt be a issue

Help!
Reply
Old May 30, 2013 | 06:30 AM
  #18  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Originally Posted by black2000xj
ok guys bought 2 new relays from AA

i installed them and i still have no brights. I took both off, switched them around and got the same results

cleaned all the grounds, but i still cant get my brights to work. Do you think its the harness or the headlight itself?

As mentioned before, the high beams will work once in a while, id say about 10% of the time

any ideas? anything i should do..all the connections are made with die electric grease so i know water and dirt shouldnt be a issue

Help!
Check for current going into relay with test light .
Reply
Old May 30, 2013 | 06:37 AM
  #19  
black2000xj's Avatar
Thread Starter
Seasoned Member
 
Joined: Jan 2011
Posts: 493
Likes: 0
From: Grand Haven, Michigan
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Default

Originally Posted by freegdr
Check for current going into relay with test light .
I got to have current going thru, my low beams work. But its my high beams, didnt work with the old relays, still dont work with the new relays

I dont think it can be a ground issue b/c if the grounds were bad i wouldnt have any headlights....right??
Reply
Old May 30, 2013 | 06:43 AM
  #20  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Originally Posted by black2000xj
I got to have current going thru, my low beams work. But its my high beams, didnt work with the old relays, still dont work with the new relays

I dont think it can be a ground issue b/c if the grounds were bad i wouldnt have any headlights....right??
Both relays have own grounds from putco harness each relay gets separate power from factory xj plug. check for power going into high beam relay from factory plug .
Reply
Old May 30, 2013 | 06:46 AM
  #21  
black2000xj's Avatar
Thread Starter
Seasoned Member
 
Joined: Jan 2011
Posts: 493
Likes: 0
From: Grand Haven, Michigan
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Default

Originally Posted by freegdr
Both relays have own grounds from putco harness each relay gets separate power from factory xj plug. check for power going into high beam relay from factory plug .
ok i will...I might just have my buddy who does led wiring make me another harness, with cheaper bosch relays instead of these chinese one

but i will take a look tonight
Reply
Old May 30, 2013 | 06:52 AM
  #22  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Originally Posted by black2000xj
ok i will...I might just have my buddy who does led wiring make me another harness, with cheaper bosch relays instead of these chinese one

but i will take a look tonight
Its not the harness its a bad connection . You said they work every once in a while ill bet it at the factory plug.
Reply
Old May 30, 2013 | 06:56 AM
  #23  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Why guess when you can test?
Reply
Old May 30, 2013 | 06:59 AM
  #24  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Originally Posted by cruiser54
Why guess when you can test?
Morning sir
Reply
Old May 30, 2013 | 07:32 AM
  #25  
EZEARL's Avatar
CF Veteran
 
Joined: Aug 2009
Posts: 5,676
Likes: 301
From: WV
Year: '96
Model: Cherokee
Default

Not only check for power but make sure all the wire contacts that deal with the hi's are inserted all the way and lock into the connectors. Had such a situation with a brand new vehicle's ignition system yrs back. Tested positive for power but the contact would push back into the connector when plugged in causing an intermittent loss of power.
Reply
Old May 30, 2013 | 08:58 AM
  #26  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by freegdr
Morning sir
Good morning back at ya!! Off to work I go. Know how hard it is to sell propane in Arizona on 85* days?
Reply
Old May 30, 2013 | 09:20 AM
  #27  
PocketsEmpty's Avatar
CF Veteran
 
Joined: Dec 2012
Posts: 4,169
Likes: 6
From: York, PA
Year: 1998
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
Good morning back at ya!! Off to work I go. Know how hard it is to sell propane in Arizona on 85* days?
Propane and propane accessories? Does your name happen to be Hank Hill?

Back on topic...I've been using dielectric grease on every darned electrical connector I mess with. Did you do that? I plan on getting my new harness installed here as soon as I wrap up my disc conversion..
Reply
Old May 30, 2013 | 02:00 PM
  #28  
salad's Avatar
Herp Derp Jerp
Premium Member
 
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Beware: if your original connectors are weak and don't "pinch" very well on the female side, dielectric grease is causing you problems. Dielectric grease is an INSULATOR - it is like caulking that never dries. It needs to be applied around the edges like a sealant. Think about it - do you do the edge of your water pump with RTV, or fill the whole unit and then wonder why you're overheating? Why would you do that with an electrical connector?

While you're checking your connectors, do the following
- Take them all apart
- Genty clean them with a brass wire brush and a heptane or hexane contact cleaner. You may have to alternate to remove all corrosion and contaminants
- Use a dental pick on female connectors to end the prongs inward. The idea is to get them to grip onto the male pins better
- Apply a light amount of a conductive electrical grease on either the pin or socket. Examples of these are Gardner Bender OX-GARD and Ideal NOALOX. You can find these at Home Depot, Lowes, etc. (Other products here: http://www.k1ttt.net/technote/antiox.html)
- Apply dielectric grease around the perimeter of the connector. Do not get any on the actual conductor. Remember, its like a gasket.
- Reassemble, wrap with tape if you feel like it.

A multimeter is essential for this type of work. Runs and connectors should read 0.3 ohms or less. When I installed my Putco harness I did the above, my grounds are 0.1 ohm to the battery and well protected from the elements.
Reply
Old May 30, 2013 | 03:26 PM
  #29  
PocketsEmpty's Avatar
CF Veteran
 
Joined: Dec 2012
Posts: 4,169
Likes: 6
From: York, PA
Year: 1998
Model: Cherokee
Engine: 4.0
Default

Originally Posted by salad
Beware: if your original connectors are weak and don't "pinch" very well on the female side, dielectric grease is causing you problems. Dielectric grease is an INSULATOR - it is like caulking that never dries. It needs to be applied around the edges like a sealant. Think about it - do you do the edge of your water pump with RTV, or fill the whole unit and then wonder why you're overheating? Why would you do that with an electrical connector?

While you're checking your connectors, do the following
- Take them all apart
- Genty clean them with a brass wire brush and a heptane or hexane contact cleaner. You may have to alternate to remove all corrosion and contaminants
- Use a dental pick on female connectors to end the prongs inward. The idea is to get them to grip onto the male pins better
- Apply a light amount of a conductive electrical grease on either the pin or socket. Examples of these are Gardner Bender OX-GARD and Ideal NOALOX. You can find these at Home Depot, Lowes, etc. (Other products here: http://www.k1ttt.net/technote/antiox.html)
- Apply dielectric grease around the perimeter of the connector. Do not get any on the actual conductor. Remember, its like a gasket.
- Reassemble, wrap with tape if you feel like it.

A multimeter is essential for this type of work. Runs and connectors should read 0.3 ohms or less. When I installed my Putco harness I did the above, my grounds are 0.1 ohm to the battery and well protected from the elements.
Good info. Apparently everything my dad taught me about the stuff was a lie I guess I've been lucky so far
Reply
Old May 30, 2013 | 05:22 PM
  #30  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by salad
Beware: if your original connectors are weak and don't "pinch" very well on the female side, dielectric grease is causing you problems. Dielectric grease is an INSULATOR - it is like caulking that never dries. It needs to be applied around the edges like a sealant. Think about it - do you do the edge of your water pump with RTV, or fill the whole unit and then wonder why you're overheating? Why would you do that with an electrical connector?

While you're checking your connectors, do the following
- Take them all apart
- Genty clean them with a brass wire brush and a heptane or hexane contact cleaner. You may have to alternate to remove all corrosion and contaminants
- Use a dental pick on female connectors to end the prongs inward. The idea is to get them to grip onto the male pins better
- Apply a light amount of a conductive electrical grease on either the pin or socket. Examples of these are Gardner Bender OX-GARD and Ideal NOALOX. You can find these at Home Depot, Lowes, etc. (Other products here: http://www.k1ttt.net/technote/antiox.html)
- Apply dielectric grease around the perimeter of the connector. Do not get any on the actual conductor. Remember, its like a gasket.
- Reassemble, wrap with tape if you feel like it.

A multimeter is essential for this type of work. Runs and connectors should read 0.3 ohms or less. When I installed my Putco harness I did the above, my grounds are 0.1 ohm to the battery and well protected from the elements.
salad: thanks for saving me the trouble of all that typing.
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:56 PM.