The Ford Barn

nichols617 · 02-15-2011, 03:01 PM

I changed my 51 F1 from 6v to 12v, negative ground, with a one wire alternator and my gauges read backwards. What did I do wrong?

Mr 42 · 02-15-2011, 03:11 PM

Is all reading backwards?
The amp gauge will probably do it since you swapped to negative ground.

Switch the connections on the backside, or if it has a loop with the wire going thru swap the direction of the wire to get it work properly.

The other gauges should not care about polarity.

makemc · 02-15-2011, 03:52 PM

did you leave your gauges on 12 volt, if so, they will probably
burn out after a while, you can use a instrument regulator
napa # IR9 reduses the voltage to 5.5 to the gauges that will
make them work properly and save them from frying.

Lawson Cox · 02-15-2011, 04:20 PM

Speedometer too?????????? LOL

BIG MIKE · 02-15-2011, 06:53 PM

I guess you'll have to drive backwards to have your guages work forwards

Jack E/NJ · 02-15-2011, 07:55 PM

Sponsored Links (Register now to hide all advertisements)

Or instead of driving backwards, you could always use mirrors to make your guages look like they're working forward. 8^)

Jack E/NJ

02-15-2011, 03:01 PM	#1
nichols617 Member Join Date: May 2010 Posts: 40	Gauges run backwards I changed my 51 F1 from 6v to 12v, negative ground, with a one wire alternator and my gauges read backwards. What did I do wrong?

02-15-2011, 03:11 PM	#2
Mr 42 Senior Member Join Date: May 2010 Location: Sweden Posts: 427	Re: Gauges run backwards Is all reading backwards? The amp gauge will probably do it since you swapped to negative ground. Switch the connections on the backside, or if it has a loop with the wire going thru swap the direction of the wire to get it work properly. The other gauges should not care about polarity.

02-15-2011, 03:52 PM	#3
makemc Senior Member Join Date: Dec 2010 Location: Northwest Fl. Posts: 152	Re: Gauges run backwards did you leave your gauges on 12 volt, if so, they will probably burn out after a while, you can use a instrument regulator napa # IR9 reduses the voltage to 5.5 to the gauges that will make them work properly and save them from frying.

02-15-2011, 04:20 PM	#4
Lawson Cox Senior Member Join Date: May 2010 Location: Above the gnat line in Georgia Posts: 7,009	Re: Gauges run backwards Speedometer too?????????? LOL

02-15-2011, 06:53 PM	#5
BIG MIKE Senior Member Join Date: May 2010 Location: Boston, Mass Posts: 358	Re: Gauges run backwards I guess you'll have to drive backwards to have your guages work forwards

02-15-2011, 07:55 PM	#6
Jack E/NJ Senior Member Join Date: May 2010 Posts: 2,179	Re: Gauges run backwards Sponsored Links (Register now to hide all advertisements) Or instead of driving backwards, you could always use mirrors to make your guages look like they're working forward. 8^) Jack E/NJ