Step 1: Fabricate the cable as shown in the photo. Tools needed: soldering iron and solder, wire stripper You may want to use two sizes and splice them together for the black one. AWG 20 or 22 would work well at the OBD-1 connector end but may be too large to solder to the DB9. Some wire, at least two pieces 6" or longer, Different colors are best, or just mark one so you can easily tell them apart later. If the USB adapter you buy has no cable (like the one in the photo), you will need a USB extension cable (about $3 typical online, more $ locally).Ĥ. Leave that for later after you decide it is worth the cost and hassle to find.ģ. An OBD-1 12-pin plug would be nice, but may be difficult to find cheaply. For the wires, stranded AWG20 or 22 would work best. Some parts, which you can get at Radio Shack or any electronics part supply store: a 1K ohm resistor, a diode (silicon or switching types are ok, but NO Zener types!), a DB9 connector (9-pin female/socket type, with solder terminals), two wires at least 6 inches long each. In most cases, it is better to run the install utility on the CD before plugging in the adapter.Ģ. Install the driver for the adapter by either letting Windows find it or by loading it from the CD supplied with the adapter. Typical prices are about $20 but you can shop around and find them for about $10 easily. Just make sure it is a FTDI-based unit, because the Prolific-based ones will not work for this cable. A USB-to-SerialPort adapter like the Sabrent CB-FT1K, or an equivalent. NOTE - BEFORE YOU GET TOO DEEP INTO THIS POST, TAKE A LOOK AT THE POST LINKED IMMEDIATELY BELOW FOR WHAT IS PROBABLY THE BEST SOLUTION - EASIER AND CHEAPER.ġ. Or if you have some basic soldering skills and tools, you can make your own cable for less than $20. You need an OBD1 cable for your PC scan app? If so, you can buy one for about $50-70 ready-to-use.
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