91 prelude dash gauges dead turn indicaters glowing

My Niece has a 91 Prelude, about a week after the stereo installers
got done with it, all gauges (tach, fuel and temp) are at the low end
of their scales and the turn signal and high beam indicators are half
light, untill you turn on the high beams, then the high beam indicator
goes out..... My conclusion: lost a ground to the IP. A .pdf manual
I found on line shows the above mentioned items are on a common ground
buss that hits the body (firewall) behind the dash in the center of
the car. Is anyone familiar with this, before I spend x amount of
time gaining access to the ground wires behind the stereo??????
Thanks for any insight to this problem!!

 

definitely sounds like a grounding problem. why not take it back to the
stereo monkeys & make them fix it? they broke it.

 

well, as luck would have it, it happened 2 weeks after the stereo was
installed... She took it somewhere, (probably not the stereo shop, not
sure) and they couldn't find the problem.... I'm an electronics tech,
used to taking care of pc's, plc's and remote controls for things
like load tap changer transformers, capacitor bank controls for
electrical substations, irrigation controls, for pumps and gates to
control canal flows and levels etc. data and telecom, pbx phone
switches, two-way radio systems etc. .... I just hate to work on cars,
even my own!!!!(did thousands of two-way and mobile phones 25 years
ago!! But I figure the guy I would take it to (if I ever took my
stuff anywhere for repair) doesn't like it either, and it's not his
car!!! So I fix my own stuff!!! I just don't pretzel under a dash
like I used to!!!

 

at least you sound like you know what you'll be doing! if the prelude's
like my civics, it's pretty easy to strip down without too much pretzel
factor.