Re: {Chrysler 300} High output alternator

Only If you did put in a heavier alternator ( not needed imho) the wire from alternator output post needs to be reinforced by say a #8 wire to the battery terminal on starter relay -directly - to carry the new high output . Don’t worry about amp gauge leave all that alone ,leave old wires in parallel . it will read about 1/2 you don’t care .

But again , not needed—- I don’t think the isolator or second battery is needed either .

What is needed is a guy who knows how to wire the power circuits correctly so they do not drain , when car is off , add a relay if needed , and hook up what he has corrrctjy to the chrysler wiring .

Same problem was there day one , before the isolater and battery right ?

Sent from my iPhone

On Jun 4, 2022, at 10:50 AM, dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx>
Date: 6/4/22 10:49 AM (GMT-05:00)
To: misse002@xxxxxxxxx
Subject: Re: {Chrysler 300} High output alternator

I believe most of us have assumed that you have a ordinary audio radio player in your car. Perhaps you can describe for us what system this is that requires an extra battery.

If your audio contractor has wired your car for a large system consuming lots of power that requires a second battery which also must be charged by your alternator then all bets are off. None of us here will be successful in diagnosing your problem without looking at the way it is wired, suffice to say old cars with old car charging systems do not do well with high-end extremely high power multiple speaker audio systems such as some of our youth now use.

The issue is not only the output of the alternator but the wiring that supports the alternator and Carries all charging current through the bulkhead to an ammeter on the dashboard. Drawing too much current through this charging system will damage the wiring. You need an automobile electrical expert to review what has been done to this car. I would not trust a youngish audio tech with a 60 year old car.

Danny Plotkin

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: misse002@xxxxxxxxx
Date: 6/4/22 10:11 AM (GMT-05:00)
To: dplotkin@xxxxxxxxxxxxxxxxxxx
Subject: Re: {Chrysler 300} High output alternator

Hi John, what do you mean heavier wires? With the stereo system or alternator?
You described exactly what’s happening, my car sits and drains. I wrote another email describing what’s happening. When the stereo place put in the isolator and extra battery in trunk thats when my main battery started draining. The amps in the trunk are supposed to run off that battery and that battery is fine. How can I tell if it’s the stereo system if they disconnected everything from the main battery and it’s showing that it’s still draining?

Sent from my iPhone

On Jun 4, 2022, at 6:00 AM, dplotkin@xxxxxxxxxxxxxxxxxxx wrote:

The standard charging system in a 1967 Chrysler when operating properly will provide plenty of power for the average car audio system. If you cannot keep a battery charged than the thing to do is diagnose the charging system before concluding your radio is the problem.

With a DVM set to DC volts across the battery, engine running at high or fast idle you should read between 13.8 and 14.2 volts +/-. The readings depend on battery condition and state of charge, electrical load on the car and ambient temperature and hence the range.

If you do not have this then its time to diagnose the charging system. Use the shop manual to follow instructions for full fielding the alternator - driving it to its full output. This will determine if the alternator or the regulator (or wiring in-between) is at fault.

It is an easy test and both are easy repairs.

Danny Plotkin

-----Original Message-----
From: misse002@xxxxxxxxx
Sent: Friday, June 3, 2022 11:56pm
To: "300 Club" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} High output alternator

Hello, anyone know where I can get an alternator with more than the usual amps? I put music in my 1967 Chrysler 300 convertible. I have an isolator and extra battery in the trunk and it’s still draining my battery.
I need a high output alternator.

Thank you,
Elaina

Sent from my iPhone

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