The Ford Barn

johcol · 08-31-2021, 11:08 AM

Hello! Working on a friends truck. He has re wired the truck and changed it to twelve volts. A voltage reducer is used to drop the voltage to the original gauges. The oil pressure works fine, however the temperature as well as the fuel do not. With key on ,temp gauge will bury itself below cold and fuel gauge stays on empty .( If you ground the sensor wire, it will go to full.) Checked voltage at gauges (6.4 ) and ground at fuel sending unit. Temperature sender resistance is approx.. 1.5 ohms cold. Any help appreciated.

08-31-2021, 11:08 AM	#1
johcol Junior Member Join Date: Apr 2018 Location: New Jersey Posts: 4	1950 FI Gauge Conversion Hello! Working on a friends truck. He has re wired the truck and changed it to twelve volts. A voltage reducer is used to drop the voltage to the original gauges. The oil pressure works fine, however the temperature as well as the fuel do not. With key on ,temp gauge will bury itself below cold and fuel gauge stays on empty .( If you ground the sensor wire, it will go to full.) Checked voltage at gauges (6.4 ) and ground at fuel sending unit. Temperature sender resistance is approx.. 1.5 ohms cold. Any help appreciated.