jwwheeler81

Finding a good grounding kit online for my 99 Max seems to be a little tougher than I thought it would be. Anyone got any suggestions or websites?

ChrisMan287

iTrader: (34)

You can either go with a generic universal kit or you can email these guys and see if they make a kit for our chassis.

https://pfbproducts.bigcartel.com/ca...-grounding-kit

I highly suggest at least cleaning/sanding the stock grounds regardless.

jwwheeler81

Read about doing this as well but I had trouble finding a post that lists/shows all the factory ground points. Couldnt find anything in my haynes manual either. I know about the battery to chasis to motor ground as well as the transmission housing. But that's it. Know of any links/threads I could look at that show or list the ground points?

CMax03

iTrader: (3)

does your internet work?
https://www.youtube.com/watch?v=iGgtt5Y3nlc
https://www.youtube.com/watch?v=gnmXKjm3tZE

jwwheeler81

Haha.... Yeah man it works. I've seen that video you posted. If you read the post my comment was about having a hard time finding information about the stock ground points.

DennisMik

iTrader: (2)

The Nissan FSM has grounding information in it, but it is not in the nice "list" that one would like to see.

In the EL section, page 14 is a list if every connector with a ground wire in it. Probably not what you are looking for.

Starting on page 315 is the wire harness breakdown. When you look at a wire harness, there are squares for the plug connectors and if you look closely, you will see drawings of a ground terminal connector. See page 316 for the symbols used.

manual link - http://boredmder.com/FSMs/Nissan/Maxima/1999/

CMax03

iTrader: (3)

Yeah I read your post....But if you watched the video you might be interested in just those few spots that count...I did this using wire and terminals I bought from The Home Depot..."Good Luck Young Skywalker"
Another good thing that will helps is to clean all your grounding points with a small wire wheel and drill, then install star washers and paint each grounding point after through!

edwardh1

which ground gives the most trouble

jwwheeler81

I'm not 100% sure which ground is the issue. I've had a hard time trying to find a list of all the stock grounds so that I could check them all and clean them up. You have any information on that?

edwardh1

I went to hardware store, number 10 stranded wire, ring terminal soldered on, connected top of rear intake manifold to firewall. thats all I have done

jwwheeler81

When you say number 10 you mean 10 gauge wire? I thought it needed at least 8 gauge? Did you notice a big difference afterwards?

edwardh1

no change but I have had no electrical issues at all.

DennisMik

iTrader: (2)

What gauge of wire you use is determined by 2 things - a) how long is the wire and B) how many amps will the wire have to carry.

In edwardh1's example, 10 gauge wire for a length of 3 feet would be good for 50 to 80 amps. As a secondary ground, this is more that sufficient.

If you wanted to put a grounding wire on the starter, then you would need a bigger gauge. The no-load specification for the starter is 90 amps. I don't know what the amps are for cranking the engine, so I will guess at 150 amps. The wire gauge for 150 amps on a cable of 4 or 5 feet is 6 gauge. If the amps exceed 150, then 4 gauge wire would be the size.

IP Cyborg

I used 1/0 oxygen free copper welding wire to create additional grounds, to accommodate a fairly powerful audio system. If you are just trying to ensure better factory system grounding, you should use 4 gauge OFC. The bolts that fix the struts to the tower inside the bay are good ground points, when you sand down to bare metal (use clear nail polish after to prevent rust), but if you snoop around in the bay you may find better points.

Search Youtube for 'The Big Three' for car audio stuff and you will find good videos to help you with this.