Instrument panel

[frank1955]

Can anyone help me.. I cant get my gas, oil, and temp gauge to work..I bought all new sensors and sending unit and all the wires are good I looked behind the speedo and some wires were unpluged..Does anyone have a wiring diagram for the gauges for a 1966 bronco..Any input will help...

 

[MachDream]

Can anyone help me.. I cant get my gas, oil, and temp gauge to work..I bought all new sensors and sending unit and all the wires are good I looked behind the speedo and some wires were unpluged..Does anyone have a wiring diagram for the gauges for a 1966 bronco..Any input will help...

Here's some input...Your IVR is bad.

 

[oleguy74]

there is a small metal rectangler cam attached to spedo cluster.this gives a pulsig 3.5-7 volts to gauges.there are black-green wires that go to each gauge.from the ivr(inst voltage reg).fuel temp oil.gauges.to test for power,remove wire from temp sender.connect a voltmeter one side to ground,other side to wire going through dash to gauge.if you see the voltage ,ivr is fine.if no voltage check those wires on gauges.by the way do not use teflon tape on senders,temp oil.the wirre to otherside of oil is white/red.temp is red white.fuel is orange.oops!to check for voltage as mentioned above turn ign switch to accessory.also you can go to seabiscuit68.tripod.com/details.this site has all the wireing diagrams for all years,(66-77)early broncos.

 

[frank1955]

there is a small metal rectangler cam attached to spedo cluster.this gives a pulsig 3.5-7 volts to gauges.there are black-green wires that go to each gauge.from the ivr(inst voltage reg).fuel temp oil.gauges.to test for power,remove wire from temp sender.connect a voltmeter one side to ground,other side to wire going through dash to gauge.if you see the voltage ,ivr is fine.if no voltage check those wires on gauges.by the way do not use teflon tape on senders,temp oil.the wirre to otherside of oil is white/red.temp is red white.fuel is orange.oops!to check for voltage as mentioned above turn ign switch to accessory.also you can go to seabiscuit68.tripod.com/details.this site has all the wireing diagrams for all years,(66-77)early broncos.

What happens if you use teflon tape on the oil and temp senors

 

[Bully Bob]

You may compromise the "ground" connection thru the base of the senders....... /emoticons/[email protected] 2x" width="20" height="20" />

 

[oleguy74]

You may compromise the "ground" connection thru the base of the senders....... /emoticons/[email protected] 2x" width="20" height="20" />

the body of the temp,oil senders need to be grounded to work.

 

[Ezcoyote]

Can anyone help me.. I cant get my gas, oil, and temp gauge to work..I bought all new sensors and sending unit and all the wires are good I looked behind the speedo and some wires were unpluged..Does anyone have a wiring diagram for the gauges for a 1966 bronco..Any input will help...

This problem occured when I did the body off restoration on my 66 Roadster. The problem was traced to the lack of a good ground between the frame and the chassis. I added ground straps at two points, one front and back, between the tub and the chassis and the problem went away.

Ezcoyote