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Popping Ignition Fuses

This is a discussion on Popping Ignition Fuses within the General Help forums, part of the LSx Technical Help Section category; Just getting my motor back in the car and I keep popping the big 50 amp fuse for my ignition. ...

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    Senior Member 01ws6er's Avatar
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    Popping Ignition Fuses

    Just getting my motor back in the car and I keep popping the big 50 amp fuse for my ignition. I am wondering if I hooked the starter up incorrectly so I drew a little diagram... Where does the wire that has the ring on the end (far right) attach to? I have it on the starter right now, but does it go somewhere else?

    Also, is there anything else that could be causing this? My interior light and annoying ass ding sing thing work, my lights all work, my gauges light up, and my fuel pump turns on but as soon as I turn the key the fuse pops.

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    Grand Imperial Wizard Sarge's Avatar
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    Where is it grounded to the engine? Usually a LSX motor will have a smaller gauge wire with a ring on it grounded to the head or somewhere on the engine for a ground.

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by Sarge View Post
    Where is it grounded to the engine? Usually a LSX motor will have a smaller gauge wire with a ring on it grounded to the head or somewhere on the engine for a ground.
    There are ground wires on the back of the head. The wire I'm referring to is near the starter on the passenger side and there is a power wire, some small wire (not too sure where it goes), and the other larger gauge wire which is currently attached to the 3rd post on the starter. I made sure all my other grounds are tight, but for some reason I don't remember that 3rd wire going to the starter?

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    Last edited by Sarge; 02-22-2009 at 04:45 PM.

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by Sarge View Post
    I tried tracing it in a Haynes manual I have but I got lost in the garble, same thing here.

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    Grand Imperial Wizard Sarge's Avatar
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    Well hell.....do you have a wire running to your alternator?

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by Sarge View Post
    Well hell.....do you have a wire running to your alternator?
    yea. the power wire on the back of the alt...I couldn't find a ground for it though?

    Also, there's 2 ground wires in the area, but they are attached to the frame...

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    Grand Imperial Wizard Sarge's Avatar
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    Lemme see if I can find something...been awhile since I screwed with a FBody....maybe while I'm looking one of the kids can chime in with some help for you man....but I'll see what I can find for you....

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by Sarge View Post
    Lemme see if I can find something...been awhile since I screwed with a FBody....maybe while I'm looking one of the kids can chime in with some help for you man....but I'll see what I can find for you....
    haha. it would much appreciated. I can't tell you how much bad luck I've had getting this thing together. Got the motor, k-member, and tranny back in the car then realized I forgot to bolt the pickup to the oil pump. took the front accessories and cover back off and then dropped the damn bolt into the pan. Had to drop the pan and use a magnet to get the bolt and finally button everything back up. Accidentally hooked a power and ground together and had a spark show haha (fixed now), then I locked my keys in the car and now this. Story of my life

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    Grand Imperial Wizard Sarge's Avatar
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    I hear ya....read through this from our bastard step child site....
    http://ls1tech.com/forums/conversion...-problems.html

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by Sarge View Post
    I hear ya....read through this from our bastard step child site....
    http://ls1tech.com/forums/conversion...-problems.html
    Thanks that may have helped! At first I hooked the power and ground on the starter together by accident and that how I got the spark show but I moved it to the second big post and no sparking, it just pops an ignition fuse when I turn the key. Also, I don't see any other spot the hook to ground in the area

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    Grand Imperial Wizard Sarge's Avatar
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    Well yeah because you now have them on a switched circuit.....still wired wrong.....I need to look at a same year starter on a FBody and I'll draw you a diagram...

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    formally 01 T/A 0verkill's Avatar
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    big red put on post closes to the wheel. big black to ground on block and small one to small poat on starter. give that a try i tryed to look at my car and thats what it looks like to me.

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by 01 T/A View Post
    big red put on post closes to the wheel. big black to ground on block and small one to small poat on starter. give that a try i tryed to look at my car and thats what it looks like to me.
    I'll try that! Where exactly do you have the line attached to the block?

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    formally 01 T/A 0verkill's Avatar
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    Quote Originally Posted by 01ws6er View Post
    I'll try that! Where exactly do you have the line attached to the block?
    there is a taped hole just above where the starter will site and the should be a good sized bolt that you put the ground to. if you dont find it i will post a pic in a day or two after my internet is back up.

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by 01 T/A View Post
    there is a taped hole just above where the starter will site and the should be a good sized bolt that you put the ground to. if you dont find it i will post a pic in a day or two after my internet is back up.
    alright, thanks! It was too damn cold to go out and look for it yesterday

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    formally 01 T/A 0verkill's Avatar
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    "Arrest Me Red"
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    ok sorry it took so long but here is what i could get. they are not that good couse i cant get my camera up there.


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    Senior Member 01ws6er's Avatar
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    i found the hole in the block where the ground goes and it fired right up. Lopey idle and open headers shakin the hell outta my garage. My neighbor came outside with a "what the F is that" look on her face!

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    formally 01 T/A 0verkill's Avatar
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    sweet good to know you got it going

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by 01 T/A View Post
    sweet good to know you got it going
    Thanks for your help!

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