My battery ground wire was pretty crappy so i opted to buy a new one. when i bought it it has the normal spot to connect to the battery post and another wire i guess from running extra grounds. here is my question.

Can i splice and solder two wires together to have two extra ground wires instead of just one? then run that to the extra ground wire connector on my new battery negative?

The first photo is of the extra ground wire that came with the new negative ground wire.

The second photo is of the two wires i soldered together. the wire on the left side would attach to the "new" ground negative and the other two wires will make two extra grounds in the engine bay.

Will that work or is it a stupid idea and i should just run "one" extra ground off it and not slice/solder two wires together on one ground.
Thanks!

 

Well I'm running 4 extra grounds! I have my battery relocated to the trunk of my integra and I have the following grounds setup.

My power cable is a 0 gauge from back to front

and my grounds are the following

2 gauge cable in the trunk (sanded down paint where the cable is)

2 gauge cable running from back to front (sanded down paint on side of shock tower where cable is)

10 gauge running from back to front split off into 5 connectors

1.going to distributor

2.going to thermostat housing grounds

3.Ecu mounting holes (on top of the ecu between the cover)

4.going to the 2 gauge cable source so the grounds haven't lost any resistance going from the back to front

5. on the intake manifold

All grounds are coming directly from my battery

 

That might work but with wire so small it will have minimal effects almost the same as having one single wire. You could have run a few single wires through that same butt connector and have 3 single wire grounds that will have much more effect than the single wire spliced into 2. I'll get some pictures of my setup in a little bit after I come back from the junk yard

 

First thing you should do is run more grounds when you buy a Honda. I run 4-gauge four corners of motor plus two off battery.

 

yeah after i did it i also came to the realisation that those wires were extremely too small hah

 

Really it depends on how much of a problem your having with grounds. In a situation like that its very similar to a chain hoist. You can attach multiple chains to it to level the load but its only as strong as the piece holding them together. With one wire spliced into multiples, you can lower your resistance to ground in a few trouble areas, but its not as effective as running a bunch of big ones.