2nd Generation Specific 1986-1992 Discussion

Battery help?

Old 04-25-2012, 02:25 AM
  #1  
Junior Member
Thread Starter
 
Join Date: Feb 2012
Posts: 17
Default Battery help?

So correct me if im wrong but the solid black batter cable is positive? and ya? well when i put that solid black wire on the negative it the motor runs without the key....like it turns like it should but when i put it on the positive everything works..except the engine..it makes a clicking noise and ya help would be appreciated. by the way the motor was put in by the previous owner and he didn't mark anything but we got it all together and now this lol also its an 88 vert N/a
Iowan82 is offline  
Old 04-26-2012, 06:19 PM
  #2  
Junior Member
 
Join Date: Apr 2007
Location: Indialantic FL
Posts: 9
Default Re: Battery help?

Black is the ground which is negative (-); red is positive (+). Not sure about your problem there on how to fix it?
jdonnell is offline  
Old 05-06-2012, 05:40 AM
  #3  
Junior Member
 
Join Date: Jan 2009
Location: Columbus, OH
Posts: 14
Default Re: Battery help?

According to the S4 wiring diagram, Solid Black is Positive, Black/Yellow is Ground/Negative. This sounds like the previous owner was rushed when hooking up the starter cables and the positive cable is making contact with the ignition switch terminal on the starter (1/4" quick disconnect between the two stud terminals). Result is that as soon as Solid Black meets positive terminal, you get a cranking engine. With polarity reversed, you get a positive grounded electrical system where some items may work but quite a few won't.

Honestly, it sounds like your car is due for fresh cables anyway. Aaron Cake on the other forum has a great how-to on making them using welding cable, though I have a couple additions you should do as well. Here is a link to his article:
http://www.aaroncake.net/RX-7/grounding.htm

The main thing is to de-loom the cables from the Engine Harness. You'll see that the positive cable has two splices in it: alternator and fuse box. More accurately, they're stapled together. Cut these off where they meet the larger cable that runs from the battery to the starter. After you've extracted the alternator and starter cables from the car, they should go right into the trash where they belong.

At your local welding supply store, purchase 11ft of 4awg welding cable and 8 lugs. The stock alternator's output stud and the body's ground point are both M6x1.0, while all other connections are M8 or M10. You'll also need a suitable lug for the fuse panel's existing cable too. This arrangement has three lugs on the positive terminal, so I'd suggest getting some marine battery terminals as well.

The following lengths are reasonably close to the originals, while giving you some slack to route and loom everything neatly:

4ft for battery positive to starter
2ft for battery negative to main body ground
2ft for main body ground to starter body
3ft for alternator to battery positive

If using a butane torch to solder the lugs, make sure it is HOT and the solder flows into the cup easily. You'll be suprized at how much solder it takes and how long it takes to heat it up enough. Once it is hot enough, the cable should push relatively easily into the molten solder. If the cable doesn't go in easily, heat the lug more. Having a torch that will stay put really helps with this. After it is cooled off, pull on the cable firmly a couple times. A properly soldered cable will be rock solid.

Here in Ohio, DeLille Oxygen sells the cable for $1.50/ft and lugs for $0.75 each. Add some red heat shrink on all the positive cables and you should be all set. I personally take it a step further and label everything with a labelmaker so there is no mistaking it ever again.
Akagis_White_Comet is offline  
Old 05-08-2012, 01:25 AM
  #4  
Junior Member
Thread Starter
 
Join Date: Feb 2012
Posts: 17
Default Re: Battery help?

Hey thanks i was confused about this damn thing cuz i thought that what you had said was right then the other person had said something different then it was weird and now this so imma try it tomorrow and see how it goes as far as the new plugs im not skilled enough or smart enough to do it i also dont have the cash or supplies im only 17 and i don't ask for funds from my parents i want it to be all me haha
Iowan82 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FD THREE S
3rd Generation Specific
3
11-07-2002 02:19 PM
RX7Aggie
2nd Generation Specific
9
10-31-2002 01:50 PM
9BASE3
Insert BS here
42
10-04-2002 04:27 PM
Dumbrotorkid
3rd Generation Specific
3
10-02-2002 08:11 PM
9BASE3
3rd Generation Specific
9
09-12-2002 01:34 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Battery help?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.