https://dev.z31library.com/index.php?action=history&feed=atom&title=Forums%2FZ31P%2Fz31-repairs-forums_engine-mechanical%2FLight_Switch_Burning_upForums/Z31P/z31-repairs-forums engine-mechanical/Light Switch Burning up - Revision history2026-08-15T20:25:34ZRevision history for this page on the wikiMediaWiki 1.43.8https://dev.z31library.com/index.php?title=Forums/Z31P/z31-repairs-forums_engine-mechanical/Light_Switch_Burning_up&diff=6015&oldid=prevz31p_Z Karma: Forum archive import (z31performance)2026-05-15T05:16:45Z<p>Forum archive import (z31performance)</p>
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|op_date=2007-01-19 21:29:45<br />
|post_count=4<br />
|archive_url=/Z31performance_archive/forum/z31-repairs-forums/engine-mechanical/1513-light-switch-burning-up.html<br />
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'''Z_Karma:''' <small>(2007-01-19 21:29:45)</small><br />
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Has anybody experienced an issue with the headlight switch getting so hot it melts the casing of the plug?<br />
<br />
The female spade terminal that plugs into the bottom part of the switch gets too hot to touch<br />
<br />
and has started to melt the outer casing. There is also some yellowish brown heat discoloration on the switch itself.<br />
<br />
I don't have any other issues with lights not coming on due to the contacts out of adjustment.<br />
<br />
Its only one of the spade plugs in the terminal, it appears to be the one controllong the marker/interior<br />
<br />
lights. I'm gonna break out the FSM and find out which wire it is, but i'm sure that is the one.<br />
<br />
It would seem that it is pulling alot of current through a weak connection and causing it to overheat.<br />
<br />
It intermittantly does not make contact and i have to wiggle the plug, or reseat the plug to get the lights to work.<br />
<br />
The only spare switch i have is the original one that was in the car that had the contact issue, even after cleaning.<br />
<br />
Anybody else experience this....?<br />
<br />
''Me thinks the junkyard is calling…<br />
<br />
''<br />
<br />
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'''zmech:''' <small>(2007-01-19 22:53:59)</small><br />
<br />
z<br />
<br />
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'''G-E:''' <small>(2007-01-19 23:15:12)</small><br />
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high resistance causes heat.. improve the connection and it should stop<br />
<br />
you might be able to add some solder blobs to the fingers - something I've done with similar switches, the more you use it the better it seats<br />
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'''OR-Zman:''' <small>(2007-01-20 04:33:19)</small><br />
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agree with the ideas above. Ive also had some luck using dielectric grease on switches that wanted to be a problem and especially on older connectors that aren't exactly as good as new. I use it mostly in the engine bay but I don't see any reason it would hurt anything on an interior connection.</div>z31p_Z Karma