Need More Beef?

[Bob Riding]

 I just finished installing a remote start switch on the inside firewall pad, just left of the clutch pedal. My battery is under the seat and it's a real pain to disconnect it, everytime I park the wagon in the shop. i've seen too many vehicle fires to feel comfortable leaving everything connected when I'm away.

 I decided to go with 4 ought (4/0) conductor from the back of the switch to the starter. I used my existing YnZ Wiring cable that came with the '40 Plymouth wiring harness because it already had the correct terminals (battery post and 3/8" end) to go from the battery to the switch. I've never had any electrical problems since the install a few years ago, however the YnZ conductor is obviously less beefy than the new one (2/0?). I know with 6 volt you want to minimize voltage drop, so I was thinking about replacing the other 3 ft cable with 4/0 conductor, but wire this large is pricey, so if it won't matter, I'll obsess on something else and leave it alone! Opinions?

[Ranger]

Can't really comment on your question. Wiring is not my thing but that is a very clean installation. May copy it on mine. That underseat  battery can be a problem to get at.