Fj45 External Voltage Regulator Install (3 Viewers)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Joined
Jul 19, 2025
Threads
1
Messages
1
Location
Sydney Australia
Hello Guys,
This is my first post in here.. appreciate your advise on this..

I got Fj45 with 2F and 5 Speed. i dont want to use Fj45 factory VR system andi want to run external voltage reg for my alternator. alternator is from 60 series and was run with J&N external VR
please reafer the attached photos..

if anyone done this please help with the wiring.

Thank you

vr1.png


vr2.png


20250719_155721.jpg


20250719_155834.jpg
 
Interesting. E, F, N seem obvious, B, I, L, and Ign(2) on the VR connector less so - none look heavy enough to handle big amps. Is there an insulated output post on the alternator marked B?

Maybe you can find a wiring diagram. The Haynes manual goes to 1982 FJ40,45,43,55 and has WD
In the free downloads manual there are ones for the 60,62 Good Luck

For me when my stuff goes out again I'm doing a like 90A one wire GM alternator and just monitoring the voltage.
 

Users who are viewing this thread

Back
Top Bottom