Phillipkj4
Well-Known Member
As I am waking up my 70 RR from a 30 year nap, I have no readings at all on fuel, temp or oil pressure. The voltage gauge works just fine.
Per suggestions in my build thread I did the change out on the Voltage regulator behind the dash. Swapped in a 7805 silicon chip and wired it in. Plugged everything back up and still nothing.
On the power input wire I have 12 volts coming in. With the chip wired in I have 5.4 volts on each positive side of each terminal when the key is turned. The oil gauge sending wire is modulating when I measure impedance leading me to believe the sensor is sending the signal, ohm range rises as the throttle is pressed.
When I pull it all out and test it on a battery on the bench I have the same readings as in dash, I am running power to the input prong and allowing the 7805 to kick down the voltage and getting 5.5 volts on positive side of each terminal. If I touch the input side of each gauge with a ground I get a quick movement of each hand. This is not happening with the Fuel gauge which I swore was moving prior to starting this.
I did search but is there a tried and true way for testing each gauge?
Thanks in advance
Phillip
Per suggestions in my build thread I did the change out on the Voltage regulator behind the dash. Swapped in a 7805 silicon chip and wired it in. Plugged everything back up and still nothing.
On the power input wire I have 12 volts coming in. With the chip wired in I have 5.4 volts on each positive side of each terminal when the key is turned. The oil gauge sending wire is modulating when I measure impedance leading me to believe the sensor is sending the signal, ohm range rises as the throttle is pressed.
When I pull it all out and test it on a battery on the bench I have the same readings as in dash, I am running power to the input prong and allowing the 7805 to kick down the voltage and getting 5.5 volts on positive side of each terminal. If I touch the input side of each gauge with a ground I get a quick movement of each hand. This is not happening with the Fuel gauge which I swore was moving prior to starting this.
I did search but is there a tried and true way for testing each gauge?
Thanks in advance
Phillip