I'm pretty sure that the wire gauges were internationally standardized in the 40's or 50's.... But to be on the same said, you can take a piece of the old wire, remove the insolation, and buy a wire gauge meter- basically it looks like a metal circule with holes on the sides- whichever hole matches the diameter of your wire will tell you what gauge it is.... BTW- it's helpful to replace wiring with wires of the same color insolation (makes things easier down the road if you have to do something again). So it can be helpful to get a nice assortment of commonly used wire colors. You can also always (excluding audio work and coil work) go with higher ampage rating wire then what was OEM.... I like to have a spoll of red, black, green, white, blue, brown, tan, and a few other colors for a few different gauges at all times. If you need wires with color tracers (like a blue wire with a red strip down the side), a good source may be old cloth covered wire for antique radio/TV/telephone collectors. Don't let the cloth fool you- I've found that it insolates BETTER then rubber and plastic because it doesn't melt or crack up over time! Hope that helps. --- Tracy Sherratt <dave-tracy.sherratt@xxxxxxxxxxxx> wrote: > Hi all , > I hope that some one out there can help on this. > When replacing old wires ,the diagram shows what > gauge & color. However are modern / new rolls of > wire still gauged the same way. I need to replace a > few wires that run from the ignition switch to > starter relay, the originals are cracking & > perishing quite bad. ( probably due to heat off the > engine.)some of the wires seem to have quite a thick > insulation. But modern wiring seems to be thinner > even if the amperage rating is the same. I am no > auto electrician but still capable of doing small > jobs like this, just the Tech side is letting me > down. For those that are familiar with the 60/61 > Imps I will probably need to replace Gen. to reg./ > reg to ammeter/ light switch. > Thanks for your time, > Dave 60 Le Baron > England. > __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com