over drive light flashes: on 1995 Ford Contour

Overdrive light of my 1994 ford countour flashes; Mechanic says the electrical harness is shorted. Can I replace it myself? and at what cost?
Thank you; whome

Asked by for the 1995 Ford Contour
1 more answer
If you still have the car, have a lee myles tech scan the transmission. I had the same flashing od light. It typically relates to trans problems. The manual lever position sensor goes out on fords and causes this signal.
Bob and Larry at Union NJ shop (Lee Myles) are excellent and honest. They fixed my 1996 for 374 dollars with tax.
I was ready to dump the car due to a failed tranny and it was only the MLP mentioned above.