Do you need to leave stock cables connected?

[DanP 19]

I tried searching but search feature doesn't really like small words like Big 3.

 

I've seen it a lot where people say you can leave the stock alternator/ground cables connected, but does disconnecting them have any effect?

 

I ask because I would rather just cap the stock cables off for a cleaner install.

[Jason Witt 65]

I left my stock cables in place, just disconnected the stock charge line at the alternator.

[emh9009 199]

No reason to remove, if anything keeping them prevents the small chance your ecu doesn't like your new wires.

[crazyikon86 5]

u could remove if u wanted

[djjdnap 78]

You can remove them however, the more wire the better.

Only wires I had to remove was from the alt to the batt, because the stud on the alternator isn't big enough to fit 3 ring terminals on...go figure.

[wjjcfuwh 0]

 just disconnected the stock charge line at the alternator.