Re: {Chrysler 300} Electrical Gremlins

[John Grady <jkg@xxxxxxxxxxxxxxxxx>]

whenever various lights go on in crazy patterns it is 99% sure it is a missing ground connection . Instead of lighting the assigned bulb current goes  that bulb to ground through other bulbs through parallel  circuitry .  If 12 v appears in error ( no ground ) on  hi beam bulb ground it will flow to ground through indicator  bulb through heavy hi beam  filament (which is off etc etc ) 
Follow the ground side on PC card ( hope you have a drawing ) to a bolt or possibly through a ground pin on the connector .
Those pins are notarious for working loose a kind of riven arrangement that holds them to pc gets loose 
Scape pin and trace both shiny  for about 1/8” around each pin base with small box cutter  and solder  . If you don’t  make it shiny solder will  not “ take “ and you will
make a mess . 
I think board shrinks in thickness over 60 years pin gets loose . Should have been soldered day one 
This is true of all mopar pc card dashes through 68 at least . 
can also solder wire to ground traces directly but you risk lifting trace off card . You can drill .060 hole through trace wide place sometimes stick wire through and fold then solder , have to look at other side . Stock is ok with soldered pins . Do it while you have it out . It will act up , intermittents 
john 

Sent from my iPhone

> On Nov 19, 2023, at 5:56 PM, Ron Waters <ronbo97@xxxxxxxxxxx> wrote:
> Richard - When you say that you changed the switch, did you replace the old switch with some aftermarket thing you got at an auto parts store, or did you replace it with the correct, OEM switch that was purpose-built for your car ? TBH, it sounds like wires are hooked up any which way without consulting the schematic. And this is the result.
> 
> Ron
> 
> -----Original Message-----
> From: 'Richard McFarland' via Chrysler 300 Club International 
> Sent: Sunday, November 19, 2023 5:28 PM
> To: chrysler-300-club-international@xxxxxxxxxxxxxxxx
> Subject: {Chrysler 300} Electrical Gremlins
> 
> Here’s is a weird one. 63 300 non letter. No instrument lights. Changed switch,switch in car looked new so po probably already had this problem. Knob turned to the left all the way but not clicking to turn on dome light,no right turn indicator. Turned all the way dome light comes on. That works. Turned all the way right and right turn indicator works. Turned about halfway the high beam indicator (red) blinks with the right turn signal ( green arrow blinks also). High beam light doesn’t work in any position other than blinking with indicator. Dash lights never come on in any position.Electrical isn’t my strong suit. Any ideas?
> Thanks
> 
> Sent from my iPad
> 
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