alternator L terminal.. Important?
11-08-05, 11:19 PM
#1
yessir
Thread Starter
iTrader: (24)
Join Date: May 2005
Location: Sebring FL
Posts: 722
Likes: 0
Received 0 Likes
on
0 Posts
alternator L terminal.. Important?
Alright, I have an s-5 alt, and I'm doing a FULL re-wire. I was wondering what the L terminal does? I know it hits the warning lights, but I'm taking them out. So is there any important purpose for it?
11-09-05, 08:05 AM
#4
Look at the FSM and trace the wiring for it, figure out what it goes to? I suspect it goes to one of the switched 12v lines, but I'm not 100% on that.
Also, running without warning lights? You've got bigger ***** than I do...
-=Russ=-
Also, running without warning lights? You've got bigger ***** than I do...
-=Russ=-
11-09-05, 10:33 AM
#7
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 22 Likes
on
20 Posts
On a series five, when the alternator isn't putting out, L puts a ground on the warning light circuit to turn on all the warning lights (sort of a malfunction light test circuit). When the alt puts out, the ground from the L terminal goes south and the warning lights turn out. The lights will still turn on if there is a problem with a individual circuit, like the door being ajar.
On a series four, the L puts a ground on a relay in the CPU which in turn puts a ground on the warning light circuit (alternator not putting out). When the alt starts putting out, the ground from L goes south and the lights turn off unless a individual warning circuit has a problem.
Frankly, on a series five alt, I don't think the L does much worthwhile except effect the warning lights. I could be wrong.....again. On a series four the L does matter and effects more than the idiot light circuit. I own a series four. Take it for what its worth.
On a series four, the L puts a ground on a relay in the CPU which in turn puts a ground on the warning light circuit (alternator not putting out). When the alt starts putting out, the ground from L goes south and the lights turn off unless a individual warning circuit has a problem.
Frankly, on a series five alt, I don't think the L does much worthwhile except effect the warning lights. I could be wrong.....again. On a series four the L does matter and effects more than the idiot light circuit. I own a series four. Take it for what its worth.
Trending Topics
11-10-05, 01:37 PM
#8
yessir
Thread Starter
iTrader: (24)
Join Date: May 2005
Location: Sebring FL
Posts: 722
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by J-Rat
Let me clarify..
The "Sense" wire TRIPS the warning lights when there is a problem. It does not provide 12 Volts to power the warning lights.
The "Sense" wire TRIPS the warning lights when there is a problem. It does not provide 12 Volts to power the warning lights.
I understand that, and I was just wondering if I can run without it. I'll try running with out it. It should work from what I picked up hear.
Thread
Thread Starter
Forum
Replies
Last Post
