Battery Isolator Operation?
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 290
Likes: 1
From: South TX
Battery Isolator Operation?
Hey Guys, I'm trying to understand if my battery isolator is working. I left the dome lights on overnight in my 03 E-350 (there's a lot of them), and it drained the batteries. The van has the factory dual battery option, and what appeares to be a selenoid or "isolator".
So my question is/are, shouldn't an isolator disconect the starting battery from any current draw? OR, if it just isolates the second battery, what loads are on the second battery? (van has towing package too)
Also, should the isolator function (open) with the key in the aux position, or only in the off position? What about in start?
Anyone know how Ford wires these from the factory?
Any help here appreciated. -Rob-
So my question is/are, shouldn't an isolator disconect the starting battery from any current draw? OR, if it just isolates the second battery, what loads are on the second battery? (van has towing package too)
Also, should the isolator function (open) with the key in the aux position, or only in the off position? What about in start?
Anyone know how Ford wires these from the factory?
Any help here appreciated. -Rob-
Senior User
Joined: Jan 2002
Posts: 377
Likes: 0
The isolator/solenoid keeps the second battery off the circuit and makes it so the truck doesn't know it is there. The only time the second battery comes into play is if you need a jump by it.
I am not sure how the fact setup is though.
I am not sure how the fact setup is though.
Thread
Thread Starter
Forum
Replies
Last Post
Improv101
1967 - 1972 F-100 & Larger F-Series Trucks
11
Dec 1, 2024 10:06 PM
Ryan Weaver
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
5
Nov 22, 2016 03:55 PM
Ridolfo
1968-Present E-Series Van/Cutaway/Chassis
9
Jun 7, 2016 10:37 PM
cadjak
1968-Present E-Series Van/Cutaway/Chassis
35
Sep 16, 2015 08:12 PM
