locating the temp guage wire? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72SWB4X4 · 01-30-2004, 07:19 PM

does anyone have a wiring harness diagram or can lend assistance?

72SWB4X4 · 01-30-2004, 08:54 PM

ok i have done some testing of the sender wire and the temp guage and the wiring harness and the voltage at the guage cluster

sender wire has no ohm drop from the pin on guage plug to the sender on the motor...

temp guage reads 54.2 ohms resitance across the two side terminals

voltage at the guage on the printed circuit reads 12.8 volts on one side and 7.4 volts on the other

Tx Firefighter · 01-30-2004, 09:26 PM

when you ground the wire, what does the guage do?

72SWB4X4 · 01-31-2004, 09:53 AM

tell which wire you are referring to and ill try it

Tx Firefighter · 01-31-2004, 10:11 AM

Is there a green wire that goes to the temperature sending unit?

72SWB4X4 · 02-02-2004, 10:13 PM

yes there is a dark green wire running from the guage to the sending unit

Longhorn Man · 02-03-2004, 12:10 AM

Ground that green wire, if the guage tachs out, then everything from that wire to the guage is working. (assuming it goes to full ledt when not grounded)

01-30-2004, 07:19 PM	#1
72SWB4X4 Florida Key's Member Join Date: May 2003 Location: Key West Florida Posts: 143	locating the temp guage wire? does anyone have a wiring harness diagram or can lend assistance? __________________ Craig Wood 1972 SWB Chevy Cheyenne 4X4 Restored stock except 454 (481 cu. in. now) most options Available pictures of my truck http://myoldtruck.com/gallery/browse...500&userid=528 Come to florida and visit www.Paradisewatersports.com

01-30-2004, 08:54 PM	#2
72SWB4X4 Florida Key's Member Join Date: May 2003 Location: Key West Florida Posts: 143	update ok i have done some testing of the sender wire and the temp guage and the wiring harness and the voltage at the guage cluster sender wire has no ohm drop from the pin on guage plug to the sender on the motor... temp guage reads 54.2 ohms resitance across the two side terminals voltage at the guage on the printed circuit reads 12.8 volts on one side and 7.4 volts on the other __________________ Craig Wood 1972 SWB Chevy Cheyenne 4X4 Restored stock except 454 (481 cu. in. now) most options Available pictures of my truck http://myoldtruck.com/gallery/browse...500&userid=528 Come to florida and visit www.Paradisewatersports.com

01-30-2004, 09:26 PM	#3
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	when you ground the wire, what does the guage do? __________________ I'm on the Instagram- @Gearhead_Kevin

01-31-2004, 09:53 AM	#4
72SWB4X4 Florida Key's Member Join Date: May 2003 Location: Key West Florida Posts: 143	grounding wire tell which wire you are referring to and ill try it __________________ Craig Wood 1972 SWB Chevy Cheyenne 4X4 Restored stock except 454 (481 cu. in. now) most options Available pictures of my truck http://myoldtruck.com/gallery/browse...500&userid=528 Come to florida and visit www.Paradisewatersports.com

01-31-2004, 10:11 AM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Is there a green wire that goes to the temperature sending unit? __________________ I'm on the Instagram- @Gearhead_Kevin

02-02-2004, 10:13 PM	#6
72SWB4X4 Florida Key's Member Join Date: May 2003 Location: Key West Florida Posts: 143	green wire yes there is a dark green wire running from the guage to the sending unit __________________ Craig Wood 1972 SWB Chevy Cheyenne 4X4 Restored stock except 454 (481 cu. in. now) most options Available pictures of my truck http://myoldtruck.com/gallery/browse...500&userid=528 Come to florida and visit www.Paradisewatersports.com

02-03-2004, 12:10 AM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Ground that green wire, if the guage tachs out, then everything from that wire to the guage is working. (assuming it goes to full ledt when not grounded)



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