Check B+ cable https://www.matthewsvolvosite.com/b-battery-cable/

That's not terrible, and might not be the source of your stalling. But you do want to do that correctly. Sorry, I don't know the wire gauge. Park at a electrical shop and have them come out and show them.

I'd check grounds viewtopic.php?t=69375

Tons of great info for DIY battery cable jobs: viewtopic.php?t=61747

I’ll measure them today to give you an idea on making them up

Tons of great info for DIY battery cable jobs: https://www.matthewsvolvosite.com/forums/viewtopic.php?t=61747 Thank you very much, very helpful! Do you recommend using crimp-on battery terminals or the ones with screws to add the cables? If you have access to the crimping tool, that would be the be...