When I pull the car back out in a couple of months I need to put in a new alternator. I've decided on the 130 amp PA Performance one, but they want me to make some wires larger... which is just a great excuse for me to put the battery in the trunk.
I've read enough stuff about wires and crap to make my head spin, so I want to do this right.
I'm looking at a Taylor box and a Moroso cut off switch.
My understanding is that 1/0 is a good and safe choice to go from the battery to the switch, and then from the switch (unfused) to the starter. I would also use 1/0 to ground the battery to the popular quad shock bracket.
From here things get a bit fuzzier for me.
To make the switch work as it should I need to run the alternator wire directly to the + terminal on the battery, correct? I don't believe I need to use 1/0 for this, is 4 AWG sufficient, or should I use 2 AWG? What size in-line fuse should I use here, if any?
I would then connect the starter to the fuse box. I've assumed that 4 AWG is sufficient for this as well, is that correct?
Beyond this, I would run one additional ground from the engine to the chassis. Now, some people have said to run this from the - battery terminal all the way up into the engine bay... but to me that's a heck of a lot of 1/0 on the car. I would rather just do the first if the second isn't necessary.
Finally, I've read a bit about the ground for the ECU and the need to use a 10 AWG wire to ensure the ECU runs the same as before. Is this true? If so, would you run the wire from the current ground back to the - on the battery?
I know it's a lot of questions but I think this thread can be helpful to anyone looking for more definitive answers to these questions.
I've read enough stuff about wires and crap to make my head spin, so I want to do this right.
I'm looking at a Taylor box and a Moroso cut off switch.
My understanding is that 1/0 is a good and safe choice to go from the battery to the switch, and then from the switch (unfused) to the starter. I would also use 1/0 to ground the battery to the popular quad shock bracket.
From here things get a bit fuzzier for me.
To make the switch work as it should I need to run the alternator wire directly to the + terminal on the battery, correct? I don't believe I need to use 1/0 for this, is 4 AWG sufficient, or should I use 2 AWG? What size in-line fuse should I use here, if any?
I would then connect the starter to the fuse box. I've assumed that 4 AWG is sufficient for this as well, is that correct?
Beyond this, I would run one additional ground from the engine to the chassis. Now, some people have said to run this from the - battery terminal all the way up into the engine bay... but to me that's a heck of a lot of 1/0 on the car. I would rather just do the first if the second isn't necessary.
Finally, I've read a bit about the ground for the ECU and the need to use a 10 AWG wire to ensure the ECU runs the same as before. Is this true? If so, would you run the wire from the current ground back to the - on the battery?
I know it's a lot of questions but I think this thread can be helpful to anyone looking for more definitive answers to these questions.
