after market radio ????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

caspear78 · 05-23-2004, 12:28 AM

i just put a radio in my truck tonite and every time i hit the brakes or sit at idle , the radio cuts out, it loses all power but when i give it gas it comes back on and stays on the station it was on, all the lights flicker on the face of the radio. what can be causeing this to act up like this? thanks Mark

Longhorn Man · 05-23-2004, 12:30 AM

Sounds like you have a stock externally regulated alternator, and it might be getting weak.
Your stereo has a built in protector, if the power level drops off too low, it'll shut off to protect it's self.

I would update to an internally regulated alt and maybe rewire the stereo too. The memory wire on some models is more than just memory and carry most of the power to the head unit. If you were to wire that to the post on the inner fender right by the battery, it'd get all the power it needed.

caspear78 · 05-23-2004, 12:34 AM

do i run the memory wire or the power wire to the post????

Longhorn Man · 05-23-2004, 12:53 AM

Memory.
But if your alt isn't putting out enough, then it won't help.

caspear78 · 05-23-2004, 12:57 AM

thanks for the help longhorn that has solved my ??? on that

toddtheodd · 05-23-2004, 09:36 AM

I hate them external voltage regulators. Whether that's the problem or not I would still suggest getting rid of it.
I found a simple wiring diagram on the internet to rewire the altenator for internal, and the altenator was off of a 95 or 98 silverado. High amp, internal voltage regulator, no more problems with dead or overcharged batteries. What could be better?

caspear78 · 05-23-2004, 10:24 AM

do u remember what site it was that had the wiring diagram? todd,,,,, or does any one on the board have a diagram to change out the altenator?

Bill72BB · 05-23-2004, 11:25 AM

Quote:

Originally Posted by caspear78

do u remember what site it was that had the wiring diagram? todd,,,,, or does any one on the board have a diagram to change out the altenator?

Can't find the diagram , but Classic Industries sells a Conversion Harness that will let you install single wire Alt .
Part # CT27555 cost is 13.95 .
This is a great mod that also is a must for ,HEI and the Headlight conversion really helps

Good Luck

caspear78 · 05-23-2004, 11:19 PM

what year alt will work on my truck when i change it over to internal regulator?????

05-23-2004, 12:28 AM	#1
caspear78 Registered User Join Date: Oct 2003 Location: biwabik, minnesota, what is this white stuff out here Posts: 334	after market radio ????? i just put a radio in my truck tonite and every time i hit the brakes or sit at idle , the radio cuts out, it loses all power but when i give it gas it comes back on and stays on the station it was on, all the lights flicker on the face of the radio. what can be causeing this to act up like this? thanks Mark

05-23-2004, 12:30 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Sounds like you have a stock externally regulated alternator, and it might be getting weak. Your stereo has a built in protector, if the power level drops off too low, it'll shut off to protect it's self. I would update to an internally regulated alt and maybe rewire the stereo too. The memory wire on some models is more than just memory and carry most of the power to the head unit. If you were to wire that to the post on the inner fender right by the battery, it'd get all the power it needed.

05-23-2004, 12:34 AM	#3
caspear78 Registered User Join Date: Oct 2003 Location: biwabik, minnesota, what is this white stuff out here Posts: 334	do i run the memory wire or the power wire to the post????

05-23-2004, 12:53 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Memory. But if your alt isn't putting out enough, then it won't help.

05-23-2004, 12:57 AM	#5
caspear78 Registered User Join Date: Oct 2003 Location: biwabik, minnesota, what is this white stuff out here Posts: 334	thanks for the help longhorn that has solved my ??? on that

05-23-2004, 09:36 AM	#6
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	I hate them external voltage regulators. Whether that's the problem or not I would still suggest getting rid of it. I found a simple wiring diagram on the internet to rewire the altenator for internal, and the altenator was off of a 95 or 98 silverado. High amp, internal voltage regulator, no more problems with dead or overcharged batteries. What could be better?

05-23-2004, 10:24 AM	#7
caspear78 Registered User Join Date: Oct 2003 Location: biwabik, minnesota, what is this white stuff out here Posts: 334	do u remember what site it was that had the wiring diagram? todd,,,,, or does any one on the board have a diagram to change out the altenator?

05-23-2004, 11:19 PM	#9
caspear78 Registered User Join Date: Oct 2003 Location: biwabik, minnesota, what is this white stuff out here Posts: 334	what year alt will work on my truck when i change it over to internal regulator?????



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