Help Needed For 1977 Wiring Problem
Thread Starter
Heel & Toe
Joined: Mar 2008
Posts: 22
Likes: 1
Help Needed For 1977 Wiring Problem
Can anyone help me? My forward light wiring harness was fried and I just installed a new harness.
I have parking lights, side lights, tail lights.
My right side turn signals work but my left front turn signal dosn't work nor does the left front side light flash. The rear turn signal works fine.
I have brake lights and the turn signal indicators work on the dash.
I also have no head lights that work.
I have no wipers that work either.
I have checked what I have done and everything looks fine and all the grounds are in place that I can see.
Thank you,
Mike
I have parking lights, side lights, tail lights.
My right side turn signals work but my left front turn signal dosn't work nor does the left front side light flash. The rear turn signal works fine.
I have brake lights and the turn signal indicators work on the dash.
I also have no head lights that work.
I have no wipers that work either.
I have checked what I have done and everything looks fine and all the grounds are in place that I can see.
Thank you,
Mike
Drifting
Joined: Jun 2005
Posts: 1,523
Likes: 1
From: grand prairie texas
Mike it sure acts like a ground problem. First I would take a piece of wire from the sngle terminal on the wiper motor and ground it against the frame and see if the wiper motor operates. As far as the lights there is a ground that is located from the book center of front fender support that you can check. Have you checked for power up to the light switch? It should be a red wire.
Thread Starter
Heel & Toe
Joined: Mar 2008
Posts: 22
Likes: 1
What do you mean "book center of front fender".
I have not checked for the power to the switch yet but will do so. I have taken the dash apart so many times it is getting old. Nothing is easy to get at.
Do you think anything could be wrong where I plugged the wiring harness to the firewall in the connector?
Also, do you think that the circuit breaker for the lights and wiper could be blown. It mentions them in the owners manual but dosn't tell me where they are located in the car. It sounds like they need to be disconnected and rewired back on.
Thanks,
Mike
I have not checked for the power to the switch yet but will do so. I have taken the dash apart so many times it is getting old. Nothing is easy to get at.
Do you think anything could be wrong where I plugged the wiring harness to the firewall in the connector?
Also, do you think that the circuit breaker for the lights and wiper could be blown. It mentions them in the owners manual but dosn't tell me where they are located in the car. It sounds like they need to be disconnected and rewired back on.
Thanks,
Mike
Drifting
Joined: Jan 2004
Posts: 1,991
Likes: 3
From: Piscataway NJ
When you had the dash out. Did you connect the two ground wires going to the tach and speedo. They are at the bottom going to two male spade terminals. That supplys the ground to the tach, speedo. and headlamp switch.
Thread Starter
Heel & Toe
Joined: Mar 2008
Posts: 22
Likes: 1
I did connect both of the grounds to the tach and speedo. I will however look again.
I was also wondering if somehow some of the connections where I plugged the new wiring harness to the firewall could have become bent or something to cause this problem. What do you think?
I was also wondering if somehow some of the connections where I plugged the new wiring harness to the firewall could have become bent or something to cause this problem. What do you think?
Thread Starter
Heel & Toe
Joined: Mar 2008
Posts: 22
Likes: 1
I took the plug off the fire wall and reinstalled it. I now have the wipers working and have high beam headlights. I don't have low beam head lights nor do my left front turn signals flash.
I am getting closer to having everything working.
Any more suggestions as I am out of ideas.
Thanks,
Mike
I am getting closer to having everything working.
Any more suggestions as I am out of ideas.
Thanks,
Mike
Safety Car
Joined: Oct 2007
Posts: 4,353
Likes: 1,721
From: Seattle Area Washington
The link is of all the electrical diagrams for the 1977 model. Each picture is just a thumbnail so they do enlarge nicely and print out almost full page size.
Hope this helps,
Brian
http://www.europeancorvette.com/html...l_diagrams.htm
Hope this helps,
Brian
http://www.europeancorvette.com/html...l_diagrams.htm
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Instructor
Joined: Dec 2004
Posts: 236
Likes: 0
From: Clearwater Florida
If the fried wire(s) got hot enough to melt the insulation, chances are that the insulation on the wires that were bundeled and touching the melted wire(s) is also melted.