Well if he did have a short, I think he would have much more problems than that. Mine only usually runs around 13.4 volts stable when it is running as my blitz fatt dc timer says and I believe it to be pretty accurate. Yes if you have a trunk mounted battery, please at least have a 4 guage if not a 2 guage.
Basically I took a jumper cable from sears about 30 bux. Make sure it is 4 guage wire then get a big cutter and cut the ends. Go to home depot or pepp boys and get gold wire terminals. Go to kragen and get some battery terminators, basically a fly nut that goes to the negative of the battery. Ground all the following points directly to the battery negative terminal. Head, intake manifold, chassis, and block. Then if you got a little more money, see if you can get a 4 guage distribution block from radio shack. The 4 guage can split into (4) 8 gauge connections. Then you ground the remaining 8 guage wires from the back of the head to distribution block, ignitor to the distribution block, and valve cover to the distribution block and if you want some real fun, add an additional ground to the alternator to the distribution block. If you have any questions lemme know. Remember the distribution block goes directly to the negative terminal of the battery. Hence now you have a Circle Earth system that beats anything out there....
Before I get flammed, the jumper cables from sears decco are very high quality. 99% copper, up to 400 degree's heat resistance and is a 4 guage wire with amperage up to 500A....
Oops one more thing, don't forget to electrical tape all connections... Good Luck
-Ken
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