chev dual alernators - Pirate4x4.Com : 4x4 and Off-Road Forum

diesel dale · 01-23-2007, 08:38 PM

i have a 93 s15 jimmy 4.3,and i would like to add dual alternators to power extra lights ,winch ect. how would i go about wireing the second alt in to my existing electrical system.thanks

79chevy39.5's · 01-23-2007, 08:52 PM

i would just run the power wire to the bat.....kinda ghetto but easy

reddman · 01-23-2007, 10:48 PM

Cut the brown wire going to your current alternator, use a good connector and reconnect it with 2 leads coming out the end, and take the new lead to the input on the new alternator. There is likely a power distribution block on your firewall, in not route the power wire to the battery. If you ditch the AC the bracket is nearly perfect for a second alt.

click the link in my sig for pics of my dual alt setup.

diesel dale · 01-24-2007, 06:55 AM

my ac doesent work anyways so that braket would work fine,thanks for the help

Forced_Overtime · 01-24-2007, 03:19 PM

Saw the way you used the ac bracket for a dual alternator, I did the same but I kept the ac in for onboard air, and since the smog pump was already gone I used that area for the second alternator, one of the bolt holes that held the smog pump in worked well and all I had to do was weld in a pair of aluminum tabs for the other end of the alternator... I'll post a picture of it as soon as I can get one... so you are running the alternators in parrallel but one of them gets really hot? Is there another way to run them and avoid early failure due to the over heating??

01-23-2007, 08:38 PM	#1 (permalink)
diesel dale Registered User Join Date: Jan 2007 Member # 85561 Posts: 45	chev dual alernators i have a 93 s15 jimmy 4.3,and i would like to add dual alternators to power extra lights ,winch ect. how would i go about wireing the second alt in to my existing electrical system.thanks

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01-23-2007, 08:52 PM	#2 (permalink)
79chevy39.5's Registered User Join Date: Feb 2006 Member # 67935 Location: kennewick WA Posts: 1,025	i would just run the power wire to the bat.....kinda ghetto but easy

01-23-2007, 10:48 PM	#3 (permalink)
reddman Registered User Join Date: Dec 2004 Member # 39492 Location: SL,UT Posts: 2,334	Cut the brown wire going to your current alternator, use a good connector and reconnect it with 2 leads coming out the end, and take the new lead to the input on the new alternator. There is likely a power distribution block on your firewall, in not route the power wire to the battery. If you ditch the AC the bracket is nearly perfect for a second alt. click the link in my sig for pics of my dual alt setup.

01-24-2007, 06:55 AM	#4 (permalink)
diesel dale Registered User Join Date: Jan 2007 Member # 85561 Posts: 45	my ac doesent work anyways so that braket would work fine,thanks for the help

01-24-2007, 03:19 PM	#5 (permalink)
Forced_Overtime Registered User Join Date: Oct 2006 Member # 80184 Location: California Posts: 53	Saw the way you used the ac bracket for a dual alternator, I did the same but I kept the ac in for onboard air, and since the smog pump was already gone I used that area for the second alternator, one of the bolt holes that held the smog pump in worked well and all I had to do was weld in a pair of aluminum tabs for the other end of the alternator... I'll post a picture of it as soon as I can get one... so you are running the alternators in parrallel but one of them gets really hot? Is there another way to run them and avoid early failure due to the over heating??