I have seen & have used extension cord on many larger truck & trailers & house trailer truck wiring, works well as long as it is 3 wire & stranded. I prefer the 5 or 7 wire "trailer wire" as above, it has the correct colors & a ground lead. Brian


My \'64\'s in the Gallery
Pictures in my Photobucket
1964 C10 Custom Cab 350/700R4
1964 Suburban 350/700R4
1979 Ford F350 4x4 400/c6