Re: Weird electrical probblem with my break lights!!!!

Posted by HH56 On 2009/6/7 18:57:29

And along Erics line, check to see which filament is which. Tail/park lights should use the small filament and brake/turn the large. Some bulbs have the index pins reversed or in just enough of a different place the bulb can be inserted & lock but wrong filament can be used.

A poor ground can cause the issue as can a burned out bulb somewhere else. Unless it a heavy duty or independent type, the flasher relies on a specific amount of resistance & current in the lamps to flash..

Here is an extraction of just the turn signal circuit if it might be of any help. Wire colors may not be exact for your car but the circuit is the same from 48 on.https://packardinfo.com/xoops/html/modules/article/view.article.php?278