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Confusion on the battery light


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ThomWalker
New User

Oct 22, 2012, 11:11 PM

Post #1 of 5 (1371 views)
  post locked   post icon Confusion on the battery light  

My battery light has come one and stayed on. It is a 1990 Mercury Grand Marquis. I have replaced the battery the pos and neg terminals and put in a new alternator. Why is it my light comes on. My car completly died on the road.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 23, 2012, 5:42 AM

Post #2 of 5 (1333 views)
  post locked   Re: Confusion on the battery light  

Just a quick and common reason on this exact car - 5.0 EFI (only engine I know of available) had common issues with the main plug into the alternator. Two should be used that are different but this one was common to melt and cross us inside ruining alternators once warranty voided if not replaced!



Check both for heat damage or corrosion first,

T

(edit) you said you replaced pos and neg teminals which I think you meant at the battery? Not an immediate problem but if just cable ends and not whole cables those are almost always a temporary fix........



(This post was edited by Tom Greenleaf on Oct 23, 2012, 5:45 AM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 23, 2012, 11:27 AM

Post #3 of 5 (1318 views)
  post locked   Re: Confusion on the battery light  

Check your fusible links.



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ThomWalker
New User

Oct 30, 2012, 8:57 AM

Post #4 of 5 (1275 views)
  post locked   Re: Confusion on the battery light  

My connector to the altenator is different then that. Has a posative and negative posts and a 2 prong plug in. found out my External electronics regulaster was going bad.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 30, 2012, 9:20 AM

Post #5 of 5 (1268 views)
  post locked   Re: Confusion on the battery light  

Appreciate your posting the fix and glad it was just that + not more involved,

T







 
 
 






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