I needed new a new ground cable for the battery so for a laugh I called up the dealer to see how much they charge. $70. Me and the parts guy both had a laugh.
Anyway, the local parts places only sell single cables, with the proper terminals on both ends. To minimize voltage drop and corrosion, I did not really want to cut and splice the new cables. My battery has top and side posts, so I mounted one cable (top post) to ground the engine and the other cable(side post) to ground the body.
Besides the very small inconvenience of now having to disconnect two cables, are there any problems with this set up? I am thinking there isn't. And it all cost $20. Anybody done this?

thanks

Just the day before yesterday I was browsing these items in our local Walmart, being amazed by how inexpensive they were. I bought a spare post cleaner - you know, the wire brush affair-- after being somewhere without one. A new set of replacement terminals - less than $2. The most expensive of their battery cables - less than $8. I was looking more at the red ones, but I believe both came with dual wires-- a 2 or 4 gauge for the starter and a shorter 10 or 8 gauge wire for the distribution. Not sure, but I think the negative wires had dual connections too. The heavy one to the block, and the smaller one to the sheet metal screw on the inner fender.

Only thing I can think of you might run into later, is one of the two connections will fail, and you'll be chasing a problem like a burned up engine to firewall jumper. But there's no difference I can think of between that risk and the risk of a factory cable getting a bad connection at the block or body ground point. And your battery has to be held well in place now, like belt and suspenders.
--
Art Benstein near Baltimore

Perhaps I will check Walmart for the dual cables. I got mine at Canadian Tire, which is sort of like Target in the US. I would prefer a more 'factory' type solution, but using both negative posts is cheap and simple, and in the long run, perhaps a more reliable way to go.

Double grounds won't do anything except help. Especialy if you have a computer controled car as most computers use the ground very much in controling voltage, so a good ground won't hurt. You can run one to the engine block and the other to the body to be in realy good shape.
Dennis