lost... battery/alternator wiring
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Teching In
Joined: Jul 2008
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lost... battery/alternator wiring I’m a little lost, I hooked up the battery today to start and had big big sparks. Spot welded the battery post.
Some background, car is a 93 rx7 with a 2001 z28 ls1 it had a hacked harness for the swap. i have a new standalone harness that i just put in few weeks ago. Right now I have battery+ -> starter -> alternator
There is 2 large 6 gauge coming off the alternator, one is cut so i capped it for now. Other went to the frame. I noticed that one going to the frame was scorching hot after having the battery connected for about 30seconds tops. ive disconnected that but been trying to troubleshoot since.
I used my multimeter ohm function to test continuity between positive and negative cables and i get no tone no reading? im a bit lost on this part of the wiring. any help would be great!
Some background, car is a 93 rx7 with a 2001 z28 ls1 it had a hacked harness for the swap. i have a new standalone harness that i just put in few weeks ago. Right now I have battery+ -> starter -> alternator
There is 2 large 6 gauge coming off the alternator, one is cut so i capped it for now. Other went to the frame. I noticed that one going to the frame was scorching hot after having the battery connected for about 30seconds tops. ive disconnected that but been trying to troubleshoot since.
I used my multimeter ohm function to test continuity between positive and negative cables and i get no tone no reading? im a bit lost on this part of the wiring. any help would be great!
Sticking you here in the conversions section. Certainly didn't belong in internal engine.
https://ls1tech.com/forums/generatio...g-threads.html
https://ls1tech.com/forums/generatio...g-threads.html
Of these cables to/from the alternator, does anything go to battery positive?
Thread Starter
Teching In
Joined: Jul 2008
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sorry about that, i did some searching and made a topic off one of the ones i found.
as of now, no. ends at the alternator currently. nothing is coming back to the positive side of the battery. there is just the "crossover" from starter to alternator.
as of now, no. ends at the alternator currently. nothing is coming back to the positive side of the battery. there is just the "crossover" from starter to alternator.
And through this "crossover" cable the 6 gauge cable going to the frame is grounding the positive from the battery.
Curious: Why would this cable be grounded to the frame?
Got any pics?
Curious: Why would this cable be grounded to the frame?
Got any pics?
Thread Starter
Teching In
Joined: Jul 2008
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So I didn't climb under the car, I actually jus cleaned up haha.
So the battery main + cable is going to the starter, from the starter to the alternator(what I'm calling the crossover) there it ends. There is however a cut red wire there that I capped. Another black wire was coming off the back of the alternator also, and bolted to the engine bay. In these pictures I have it cut.
So - battery----starter----alternator. I called the company that did my engine harness and said "it should be grounded" when I asked. Asked about the other wire and said to "try a couple things out" haha, I think I called during lunch break.
Thanks for all the help btw
Unrelated, I'm using a leash electronics board for my chassis harness and that thing seems to be DOA... Been a good day.
So the battery main + cable is going to the starter, from the starter to the alternator(what I'm calling the crossover) there it ends. There is however a cut red wire there that I capped. Another black wire was coming off the back of the alternator also, and bolted to the engine bay. In these pictures I have it cut.
So - battery----starter----alternator. I called the company that did my engine harness and said "it should be grounded" when I asked. Asked about the other wire and said to "try a couple things out" haha, I think I called during lunch break.
Thanks for all the help btw
Unrelated, I'm using a leash electronics board for my chassis harness and that thing seems to be DOA... Been a good day.
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Verdad Gallardo Thread Starter
Teching In
Joined: Jul 2008
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yes, with this removed i have zero issue connecting now. so i think ultimately this was the issue, but do i need to run a new wire from alternator back to battery? or will the charge backfeed since everything is connected to each other?
So when the company said "it should be grounded" they might've been talking about a different wire, you misunderstood them or they're completely wrong.
Glad you got this fixed. Now onto I'm sure your many other problems!
Glad you got this fixed. Now onto I'm sure your many other problems!