Hi, I relocated my battery to the trunk a while back. I recently purchased an msd sci pn6300. I'm ready to install this but I realized that a have to connect the red wire to the positive terminal on my battery and the black wire to the negative. In other word, the installation instructions assume I have my battery in the engine bay. At first, I was thinking just soldering more wire to the wires so they can reach my battery in the trunk. Instead, I was wondering if I can make a positive and negative terminal post in the engine bay with the battery in the trunk. This will not only help for my msd install but for other future mods/ adjustments that may need some battery power in the future. It will be nice and practical, IMO. Any ideas? Has anyone ever done this? Thanks in advance to anyone that decides to help.
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Does anyone know how to make a positive and negative post terminals in the engine bay
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Originally posted by oyajicool View PostYou could try using a suitable size junction box made of PVC or something from Home Depot mounted in the engine bay. Cable end terminals can be replaced with proper size copper terminal ends available from auto parts stores.
Hooked up to the battery itself. The junction box would kinda
Act like a "middle man" and maybe it would be sending less voltage Cus some voltage may have been lost somewhere in the middle you know what I mEan? As long as I'm getting 12 volts from the junction box I'll be good.
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Originally posted by oyajicool View PostAs long as your alternator is working properly and supplying charging voltage to the main fuse box there will be proper voltage available for what you'll need.
My local junkyard sucks and I don't think I would find an older bmw( what model and year to be exact?) the junction box sound like a better idea IMO. Thanks for the input so far. Any other ideas?
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Just run the power to your fuse box, and the earth to the chassis.
Where have you run the battery cables to? The fuse box right?
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Originally posted by pike0825 View PostMy charging system is good right now. I did the " big three" upgrade a while ago so I'm good to go. Can u tell me more about this junction box from home depot? Is it just a box with a positiv and negative terminal on it? I'm going to have to run the wire from my battery to this box right? And can I hook up more things to it other than my msd?
My local junkyard sucks and I don't think I would find an older bmw( what model and year to be exact?) the junction box sound like a better idea IMO. Thanks for the input so far. Any other ideas?
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Originally posted by likwid2u View Postgo to the junk yard and look for older bmws they have a piece that goes through the firewall for the positive wire because the battery was located under the seat its bolted on the fire wall on the passenger side usaully
I know for a fact the late 80's/early 90's 3 series had the battery in the back of the car so they had a cable that ran to the front with two "terminal" ends that were mounted to the firewall so you could jump start it without having to dig out the battery.-Ian
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Originally posted by evil_demon_01 View PostJust run the power to your fuse box, and the earth to the chassis.
Where have you run the battery cables to? The fuse box right?
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Originally posted by pike0825 View PostYeah, I have 2 Gauge wire running from alt. to fuse box and from fuse box to the battery. So your saying I can just hook up my positive cable from my msd to the terminal on my fuse box( which one?) and just hook up the nagative cable from my msd to ground ( and not the negative post on my battery?) isn't It important to hook up the msd dirrectly to the negative post on my battery ( considering is pobly a stronger ground) rather than any ground point in the bay?
And the chassis is fine for an earth, just use a star washer for good contact.
Car Safety / General Servicing Checks --------Basic suspension checks
My 5.7 LS1 Holden Ute
A "Finished" project car is never finished until its been sold.
If at first you don't succeed, Try again. Don't give up too easily, persistance pays off in the end.
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Originally posted by LastToBrake View PostThis.
I know for a fact the late 80's/early 90's 3 series had the battery in the back of the car so they had a cable that ran to the front with two "terminal" ends that were mounted to the firewall so you could jump start it without having to dig out the battery.
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Originally posted by evil_demon_01 View PostHook the power wire to the 2 gauge at the fusebox (with an inline fuse)
And the chassis is fine for an earth, just use a star washer for good contact.Last edited by pike0825; 04-18-2012, 07:16 PM.
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http://www.grainger.com/Grainger/CAN...YY7?Pid=search
Above is something I had in my head. Bring positive cable from relocated battery into one hole. Bring original battery cable into another hole. Both cables should have terminal ends of proper size for the wire gage installed. see below.
http://electrical.hardwarestore.com/...-2-661858.aspx
Tie the cables with bolt and nut in the middle of the junction box (hub), which should be mounted onto chassis. Keep the lid closed till you need to do "jump" or whatever.
You can have a fuse block connected to the hub through another hole and install MSD. See below.
http://www.wiringproducts.com/conten...FQmynQodRjWJxg
Links are just to show pics as examples.Last edited by oyajicool; 04-18-2012, 09:22 PM.A&P-IA
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Originally posted by oyajicool View Posthttp://www.grainger.com/Grainger/CAN...YY7?Pid=search
Above is something I had in my head. Bring positive cable from relocated battery into one hole. Bring original battery cable into another hole. Both cables should have terminal ends of proper size for the wire gage installed. see below.
http://electrical.hardwarestore.com/...-2-661858.aspx
Tie the cables with bolt and nut in the middle of the junction box (hub), which should be mounted onto chassis. Keep the lid closed till you need to do "jump" or whatever.
You can have a fuse block connected to the hub through another hole and install MSD. See below.
http://www.wiringproducts.com/conten...FQmynQodRjWJxg
Links are just to show pics as examples.
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