The Ford Barn

wcmill · 01-10-2023, 11:25 AM

Hi guys, this is my first post and am happy to be aboard……WHAT A FANTASTIC SITE!!
I finally bought my first Model A about a week ago. Have been a dedicated muscle car guy (still am) but love the A…..so simple.
So first of I’m sure many questions:
For clarity my car is a 31 deluxe roadster. It was fully restored about 9 years ago, driven for a few years then stored. I’m in the process of changing fluids, timing, gas tank rust removal, etc. the previous owner installed a small hobby battery to run the 12 volt signal lights that were installed. For whatever reason he grounded the neg terminal to the firewall, and installed an inline switch on that line.
The car itself is the original 6 volt positive ground..
Would this not create havoc or issues with the ignition or for that matter anything else that’s operated by the car on 6 volts?
So you have a big 6 volt car battery grounded positive…..then a smaller 12 volt grounded negative…but to the same place (the frame). Would they not be in conflict with each other in some way??
I haven’t started the car yet….however the signal lights do work fine.

01-10-2023, 11:25 AM	#1
wcmill Member Join Date: Jan 2023 Posts: 55	12 volt aux battery grounded to frame?? Hi guys, this is my first post and am happy to be aboard……WHAT A FANTASTIC SITE!! I finally bought my first Model A about a week ago. Have been a dedicated muscle car guy (still am) but love the A…..so simple. So first of I’m sure many questions: For clarity my car is a 31 deluxe roadster. It was fully restored about 9 years ago, driven for a few years then stored. I’m in the process of changing fluids, timing, gas tank rust removal, etc. the previous owner installed a small hobby battery to run the 12 volt signal lights that were installed. For whatever reason he grounded the neg terminal to the firewall, and installed an inline switch on that line. The car itself is the original 6 volt positive ground.. Would this not create havoc or issues with the ignition or for that matter anything else that’s operated by the car on 6 volts? So you have a big 6 volt car battery grounded positive…..then a smaller 12 volt grounded negative…but to the same place (the frame). Would they not be in conflict with each other in some way?? I haven’t started the car yet….however the signal lights do work fine.