"Big 3" Electrical Mod on '87 4Runner
Big 3 mod is upgrading:
1) Battery negative to chassis
2) Alternator to battery positive
3) Chassis to engine
I decided to upgrade my electrical wiring due to adding the following:
12-place auxiliary fuse box
2 150W inverters (daughters gotta charge their DS's)
and these are going on this weekend:
1 400W inverter
Stereo w/ 240W amp
Flex-a-lite fan 674 (draws 40A peak at startup & 19A running)
130A Denso rebuilt alternator
and an ARB locker compressor in a when the summer heat goes away.
Needless to say the stock wiring will be taxed after this weekend if not already. I picked up Stinger brand 1/0 AWG amp wire and have all of the materials.
I've also read up on the process and understand everything but one item. All of the write-ups that I found say to leave the stock alternator to battery positive (fuse box in my case) wiring in place.
I understand that current flows through the path of least resistance which will be the new wire, so why eave the old? Sake of ease?
If so, couldn't I just bypass the fuse box, go directly from the alternator to the battery, and install my own inline fuse?
Any help would be appreciated.
Last edited by angrybob; 08-19-2011 at 03:32 AM.