Factory HU 6.5V amp turn-on lead signal

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81916
Printed Date: May 12, 2025 at 11:20 AM

Topic: Factory HU 6.5V amp turn-on lead signal

Posted By: rabreedlove
Subject: Factory HU 6.5V amp turn-on lead signal
Date Posted: August 22, 2006 at 11:42 AM

I am installing a Nissan 6-CD changer. It includes an amplifier turn-on signal lead, but the FSM says that the criteria is "greater than 6.5V". My RF amplifier has a 12V turn-on lead connector, so I'm not sure if the head unit will turn on the amp or not.

Anyone have suggestions on how to connect this? Should I just use the 12V switched power (which will make the amp turn on when the car is started)?

If I need to add a relay, any specific model suggestions would be very helpful. Crutchfield had the Bosch E5000 relay listed on their Web site, but they said that the turn-on signal had to be 12V as well as the 12V constant source, even though the instruction sheet only stated that the input signal needs to be "positive switched".

Thanks in advance for the help.

Replies:

Posted By: rabreedlove
Date Posted: August 22, 2006 at 5:59 PM

#1 -- what do you mean by "come off the acc. wire with a proper fuse?". You mean add a fuse between the radio harness and the amp? Isn't the fuse for the audio system protection enough?

#2 -- What kind of relay can I get that will work with a 6V signal input?

Posted By: rabreedlove
Date Posted: August 22, 2006 at 9:32 PM

nouseforaname -- Thanks for the input!

Does anyone else think that the relay would work with the 6V input? I'm not doubting nouseforaname, I just would like a couple of opinions before I have to order the relay!

THANKS!