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Unread 03-09-2010, 10:15 PM   #1
MrDad
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1989 YJ Wrangler 
 
Join Date: Mar 2010
Location: Texas
Posts: 6
MrDad has no dash, parking, brake, or head lights

Subject: '89 Wrangler, 4.2L

Need help with: Dash, parking, brake, and head lights.

Chief complaint: Lights stopped working from one day to the next.

Possible culprit: Alternator had been overcharging at highway speeds and I had to run headlights to bring guage down from red zone during commute. Did this for a few months.

Actions taken to remedy so far: replaced head light switch, relay, cleaned all grounds, checked all fuses, cleaned battery posts, and replaced alternator.

Problem: still no lights.

Any possible suggestions to seek a solution to my problem is greatly appreciated.

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Unread 03-09-2010, 10:28 PM   #2
rustywrangler
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Did you check your fusable links??????? should be down on the fire wall between the block and batt. They go to the starter relay. One of them feeds power to all of the lights.
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Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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Unread 03-09-2010, 10:43 PM   #3
MrDad
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Location: Texas
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Hmmm...found fusible links you spoke of, but how are they accessed to see if they need replacing? The black "rubber housing" around fuses looks like they need to be cut open to view. Thank you for the suggestion, I had not known about this possibility.
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Unread 03-10-2010, 06:00 AM   #4
Elsahara
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1989 YJ Wrangler 
 
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I did not have the "cut" the fusible link to get it out, on my 90 4.2 when it blew.

I did however need to clean it find where it opened and pop off the cover and replace the fuse. Sorry i cant explain it well or give you more info. This was.....6...7 years ago. I looked on google for a pic but came up empty.
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Unread 03-10-2010, 06:22 AM   #5
K4KAS
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To check a fusible link, pull on it in increments and see if it stretches. If it stretches, you found the blown link.
Did you check all the bulbs? 12 volt alternators can put out up to 20 volts unregulated. Thats enough to blow all bulbs.
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Unread 03-10-2010, 06:28 AM   #6
rustywrangler
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I do the stretch test as well.
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Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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Unread 03-10-2010, 06:30 AM   #7
Elsahara
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Quote:
Originally Posted by rustywrangler View Post
I do the stretch test as well.
so apparently mine was not oem...
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Unread 03-10-2010, 08:17 AM   #8
MrDad
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Thank you all. I will perform this test next chance I can get to it. Ironically, this morning I go to take daughter to school and Jeep won't fire up. I went to last place I worked on and jiggled the starter fusible link wire and it fired right up. I know now where my problem area is. My next question is: how do I replace these fusible links, and is it a complete wire assembly, or do I simply replace inline fuse? I am new to this repair and remain clueless.
You all have been a tremendous help! I love this place!
Thank you.

PS.
Wires seem rubbery and very soft.
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Unread 03-11-2010, 04:54 PM   #9
MrDad
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Ok Jeepers....here goes....time to cut some wires. WIll post results after attempt.
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Unread 03-11-2010, 07:08 PM   #10
MrDad
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And the Jeep gods said....Let there be light!

Thank you rustywrangler and all. I can drive past dusk now.

Thank you, sincerely, MrDad
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Unread 03-12-2010, 07:22 AM   #11
K4KAS
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Glad you got her fixed! Thanks for checking back with us!
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Unread 03-12-2010, 08:33 AM   #12
MrDad
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Location: Texas
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Anytime K4. Your test for finding a failed fusible link worked. I found the damaged fuse immediately after performing the test.
It was definitely a team effort and this forum gets all the credit. Thanks again to everyone.
I plan on visiting this site a while. I am in the process of reviving my old '89 back to par after I almost sold her for $700. What a mistake that would've been!
See you around!
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