|
|
![]() |
#1 | |
Member
Join Date: Aug 2016
Posts: 173
Likes: 113
Liked 62 Times in 29 Posts
|
![]() Quote:
|
|
![]() |
![]() |
![]() |
#2 | |
VIP Member
Join Date: Jan 2009
Location: Bardstown, KY
Posts: 1,941
Likes: 132
Liked 372 Times in 130 Posts
|
![]() Quote:
All my cars with rear mounted batteries are wired this way. That big fat welding cable running up the side of car is only hot when the starter is kicking over. Years ago I wired a rear mounted battery the way NHRA shows and that fat wire shorted out and caught on fire. Bad idea. Ever since then I have wired it this way in the diagram... the correct and safest way...( note that the switch still kills every functioning item on the car when switched off ) ![]()
__________________
Alan Mackin Stock 3777/ SS 3377 P/SA & SS/PA Fox Thunderbird I/PS '95 Mustang GT |
|
![]() |
![]() |
![]() |
#3 |
Senior Member
Join Date: Jun 2006
Posts: 541
Likes: 11
Liked 20 Times in 14 Posts
|
![]()
Looking at this diagram it's the way I have wired mine. But it still has a constant hot wire running to the alternator. Could you run this wire to the main switch and then to the battery ?? And if so how big of a switch (amp wise) should we use?
|
![]() |
![]() |
![]() |
#4 | |
VIP Member
Join Date: Jan 2009
Location: Bardstown, KY
Posts: 1,941
Likes: 132
Liked 372 Times in 130 Posts
|
![]() Quote:
If you kill the main switch, you kill engine power. You kill engine power, you kill the alt. If I wire the alt. to the switched side of the main ( that feeds the fuse box), the engine will still run if the main disconnect is off because the alt. is still feeding 12v to the fuse box while the engine is still running. Thus the location of the alt. wire on the source side of the main switch, not the fuse box side. edit: Sorry Jeff if I de-railed your thread
__________________
Alan Mackin Stock 3777/ SS 3377 P/SA & SS/PA Fox Thunderbird I/PS '95 Mustang GT Last edited by ALMACK; 12-09-2016 at 02:37 PM. |
|
![]() |
![]() |
![]() |
#5 | |
Senior Member
Join Date: Jul 2014
Posts: 572
Likes: 39
Liked 53 Times in 38 Posts
|
![]() Quote:
The alt and big red wire to sol. would have to be on the other side of main switch to completely shut off current from the bat, pourpse of main disconnect. That alt wire is still hot according to that drawing. Last edited by Coleydog; 12-09-2016 at 06:08 PM. |
|
![]() |
![]() |
![]() |
#6 |
Member
Join Date: Jan 2011
Location: Hays, KS
Posts: 380
Likes: 226
Liked 70 Times in 31 Posts
|
![]()
I've been trying to figure out for years why NHRA requires the master switch to be on the positive cable. It should be on the negative cable. It would be much safer and easier. No battery ground and everything will be killed. Somebody please explain to me why I'm wrong.
__________________
Darrel Goheen 785-623-7021 Stock Eliminator 585 94 Camaro Z/28 LT1/ET 585 67 Chevelle 427 Tehnician for JustAnswer.com Last edited by Darrel Goheen; 12-09-2016 at 06:42 PM. |
![]() |
![]() |
![]() |
#7 | |
VIP Member
Join Date: Apr 2002
Location: Coarsegold, CA
Posts: 1,016
Likes: 57
Liked 320 Times in 102 Posts
|
![]() Quote:
If there is an accident and the positive and negative crushed would still have a short and you have not addressed the issue of protecting both the front and rear batteries............ If wanted you could control the front battery with a constant duty rely....... Sorry I hijacked thisthread.... Bob
__________________
Bob Mulry 7516 STK A & M Motorsports |
|
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|