Topic: New cd player
in Forum: C3 Electrical
This past weekend I installed a new cd player in my 76,as i was trying
to identify the correct wires for the power and grounds I shorted the
yellow power lead, I checked the fuse which was not blown, my
question is this, is there a fuse link involved for the radio and does it
also power the electric windows because they are not working either and If there is a fuse link where is it located
In my car's owners manual, it shows the factory radio was wired through a 10 amp fuse in the same circuit as the rear window defogger, but the specs state it uses a 20 amp fuse.
If you have a power antenna, you also have a separate power lead for that from your factory radio.
Hope this is of some help.



Moderator
George, I assume your car originally had a 400 trans. You should still have the "kick-down" switch on the gas pedal. It is possible that the connector that used to go to the trans was cut, or has shorted out somewhere, and that is what is blowing the fuse when you get on it hard(full throttle). On my '74, the diagram shows the same fuse for the radio, and the cowl induction "air door" in the hood, which uses the same switch to operate it as the trans kickdown. Just an idea....

Joel Adams
C3VR Lifetime Member #56
My Link
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Thanks Joel! So is this switch something I can remove? I only have one wire going to the new r4 trans.
Also under electrical a member has a posting asking for adivce with his windows. I was wondering if maybe you could take a read and help him out? You know and understand the electrical better than most. Thanks
gellisvette
Yes you can remove the switch because it was for the TH400 trans but as Joel said, it also opens the cowl door for 73-75 Vettes. I would first check the end of the orange wire (thats the wire that attached to the trans) to see if it is shorting out on something. That way you can keep the part for the air door working.
Brian - NCM Lifetime Member
73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System

tonyb47
The power windows are on a seperate circut which draws power from the battery feed on the horn relay (red wire) and then to a 30amp circut breaker. From there it goes through the fire-wall (orange/blk wire) and to the power window relay.
However you may have a bad ground. The Black wire is the ground for the radio and the gages and lights in the center cluster. Check for power at the yellow wire to a good ground like the battery itself. I ran a seperate wire back to the bird cage for the cluster ground when I changed my radio. The PO didn't and I had lots of funny things happening until I did that.
Good luck
Brian - NCM Lifetime Member
73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System




Moderator

Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"