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Old stereo with common ground Retro

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=14533
Printed Date: June 11, 2024 at 5:58 AM


Topic: Old stereo with common ground Retro

Posted By: fmc815
Subject: Old stereo with common ground Retro
Date Posted: June 06, 2003 at 10:34 AM

My classic 1975 FMC RV has a Learjet srereo with I assume a common ground system. Plug has 4 wires, red, green, black, blue. Red is hot,  one wire is common to all speakers, one wire LF & LR, one wire RF & RR. There is a dual pot switch in the rear speaker circuit. (did not work took out  and rewired) What a nightmare!!

My problem is I want to put a new Pioneer Cd stereo in. Am I going to have to rewire for 2 wires to each speaker or can I hook up as it is wired. I shudder at the thought of fishing new wires in this rig. presant wires are stapled so I cant use one to pull new ones in. Any thoughts??

Thanks 




Replies:

Posted By: MielGibson
Date Posted: June 06, 2003 at 2:38 PM
C'm on rewire the thing, it's gonna be fun!!posted_image

Seriously, it all depends on the new HU. Most recent units are high power which means the speakers are isolated from ground.
So, make sure the one you get has speakers sharing a common ground.
Good luck!





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