wire?
 

does solid core or the multi core matter for performance... cuz my performance went way down after attaching the new batteries...

Yes it does...but its a long boring complicated theory...what did you use and with what new batteries.

i just moved my battery pack above the electronics on my hummer...

So did you use different wires? if so what kind? and did you solder them together or just twist and tape?

yeah i used different wires i dont know what type... one is solid core and one wasnt...

Your not giving me alot to go on here but the replacement wire needs to be the same size or bigger and where you made connections needs to be soldered.

its bigger and i soldered it in the correct location... so i dont know what could be wrong... does solid core give you better performance...

Not that you would ever notice in this application.

ill resolder it and see if that helps...