Yes.
First, you must locate the engine oil level transducer located on the driver side, front, bottom of the engine block. You can do a quick search on summitracing.com, if you're unsure of what it looks like.
Once you've found the oil level transducer, you'll notice a wire connected to a copper terminal on the top of it. That wire is cheap and easy to find and replace.
That would be my first suggestion. If the wire doesn't solve the problem, buy a new transducer and extension (the small oil feed connecting the block to the transducer), which ought to cost about $20.
If it STILL doesn't work, check and/or replace the gauge.
Hope this helps!
Here are the 66 wiring diagrams: http://www.hammar.dyndns.org/wiring/wiring1966.htm
Fuel sender inside the gas tank may be block
On my 1966 bus the gas gauge has 3 terminals. +,G and the light. The + is black, G is Grey and the light is the striped wire
ford mustang 1966
The top speed for the 1966 Ford Mustang is around 150 to 170
http://www.mustangmonthly.com/ or http://www.mustang123.com/Downloadable wiring diagrams for 1964-1973 mustangs are available at:http://www.themustangshop.com/resources.cfm
http://www.mustangmonthly.com/ or http://www.mustang123.com/Downloadable wiring diagrams for 1964-1973 mustangs are available at:http://www.themustangshop.com/resources.cfm
http://auto.howstuffworks.com/1965-1966-ford-mustang-specifications.htm
How fast does the 1966 Ford Mustang Shelby GT 350 do what?
My 1971 Ford Mustang , fastback , with 351 Cleveland , 4 barrel , had drum brakes on the front
Research has shown that there are a number of options available for purchasing parts for a 1966 Ford Mustang. These parts can be found on eBay, CJ PonyParts, and Dallas Mustang.
Impalas Bob's will sell you a hard copy of the 1966 Impala wiring diagram for $9.99. Alternatively you could check out the DIY Repair Manual site that sell complete service manuals including the wiring diagrams.