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Username Post: Wiring Issue, 1967 Corvette        (Topic#350109)
bajones238 
"6th Year" Gold Supporting Member
Posts: 402
bajones238
Loc: South Carolina
Reg: 06-19-11
03-14-18 02:48 PM - Post#2727604    

I have already posted this saga on the CorvetteForum, so if it looks familiar, that's why.

I have a neighbor who has a 1967 Corvette with electrical issues. I have no experience with Corvettes, but have been around Chevrolets for many years. I currently own 3.

Yesterday, his running (parking) lights worked (both front and rear), as did tail/brake/backup, turn signal, emergency flashers and license lights. Rear harness had issues until we cleaned the connections, which got everything back there working. However, we had no headlights.

Per a great suggestion from the guys at CorvetteForum, we decided to check connections at the dimmer switch. When we removed the carpet to get to the switch and wiring, we found the plug had become disconnected from the switch (probably happened when the owner installed the carpet). Hooked it up and we got headlights!

Now, here is the strange thing: we now have no taillights (they worked yesterday, before we got the headlights going) and we keep blowing the 20A taillight fuse. So, we clearly have a short somewhere, related somehow to the new condition of having the headlights working. We will get in there tomorrow and try to find the short.

Meanwhile, if anyone here has encountered (and fixed) this problem in the past, and can pass along a few hints, we would be most appreciative.


1953 3104 1/2 Ton Truck
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449


 




bel-air 62 
Member
Posts: 120

Reg: 01-16-05
03-14-18 04:12 PM - Post#2727619    
    In response to bajones238

You say you cleaned the connections but did you also clean the ground wire that goes to each individual light? Remember that the ground wire has to be cleaned at both ends.



 
bajones238 
"6th Year" Gold Supporting Member
Posts: 402
bajones238
Loc: South Carolina
Reg: 06-19-11
03-14-18 05:14 PM - Post#2727628    
    In response to bel-air 62

All the grounds checked good but I will have another look at both ends, as you suggest. Thank you!

1953 3104 1/2 Ton Truck
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449


 
bel-air 62 
Member
Posts: 120

Reg: 01-16-05
03-15-18 04:04 AM - Post#2727662    
    In response to bajones238

Corvettes have a tendency to all kinds of weird things because unlike other cars they need ground wires to each light. Any one of these that isn't properly grounded will affect other lights, doesn't always make sense but is common.



 
bajones238 
"6th Year" Gold Supporting Member
Posts: 402
bajones238
Loc: South Carolina
Reg: 06-19-11
03-15-18 01:42 PM - Post#2727715    
    In response to bel-air 62

We got everything working, finally. It turns out we had several problems:

1. Dimmer switch disconnected.
2. Bad flasher with expired capacitor across its terminals.
3. Dirty connections inside several harness plugs.
4. Bent contact inside one taillight socket, causing a short to ground.

Thanks to bel-air62 for the suggestions.

1953 3104 1/2 Ton Truck
1965 Impala SS 327/M20
1965 Chevelle SS 327/M20
VCCA #47487
AACA #446449


Edited by bajones238 on 03-15-18 01:43 PM. Reason for edit: No reason given.

 
bel-air 62 
Member
Posts: 120

Reg: 01-16-05
03-17-18 09:58 AM - Post#2727937    
    In response to bajones238

Glad you was able to find the problems, Corvettes can be a pain!!



 




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