Random wires come unplugged!?!

[dmdodd]

So this evening I was replacing a 20-Amp fuse in the fuse box under the driver's side dash.
I found 2 sets of wires randomly unplugged.
+ Set 1: a green and red wire from the top left of the fuse box. (I couldn't see where this one should go)
+ Set 2: a green and blue wire from the right hand side of the driver's footwell. (As seen in the picture, it looks like it should attach to the wire plugs underneath the steering column)

Please give me any advice: where should they go? What are they for? Why would the previous owner have unattached them? Will something malfunction if reattach them? :confused
Thanks everyone!

~Dan

{Red and Green on left of picture}

{Green and Blue held up at bottom}

 

[6880 Mike]

Do you have the '79 assembly instruction manual (AIM)? The AIM usually shows which items plug in to the fuse block. It is possible your connectors are for options which may not be on your car, but the breakouts are part of the stock wiring harness.

 

[dmdodd]

Ah ha, well unfortunately no I don't have the AIM. Do have the Chilton's but that really doesn't help :-(

 

[mkapp7879]

The green and ORANGE wire connector goes to the buzzer attached to the right side of the fuse box. Do any of you buzzers work? Keys in ign, lights on, seat belt?

I'll take a look and see if I can trace the green/blue.

 

[dmdodd]

The green and ORANGE wire connector goes to the buzzer attached to the right side of the fuse box. Do any of you buzzers work? Keys in ign, lights on, seat belt?

I'll take a look and see if I can trace the green/blue.

I've never heard the buzzer to have ever gone off, so I assume that disconnected wire could well be the cause of it.

My power locks don't work currently either, may be related to this or green/blue wire.

 

[mkapp7879]

I can see the empty lug at the bottom of the buzzer in your pic.
Didn't have a chance today to look for those other wires. Will try to get my big head up under the dash tomorrow.

 

[dmdodd]

Yeah, just plugged the green/orange wire back in, and when the key's in the ignition and the driver's door's open, the buzzer goes off. So this is good. Assume the buzzer probably goes off in other instances also.

Thanks mkapp7879, appreciate the help. Enjoy getting yo 'big head' up in one of the most awkward places possible in a Vette to look for the blue/green wires.
Can't believe how many Vette's you've got, kinda jealous!

~Dan

 

[6880 Mike]

...unfortunately no I don't have the AIM...

Spring for an AIM. You'll be glad you did.

 

[dmdodd]

Spring for an AIM. You'll be glad you did.

Indeedy I am, placed one on order yesterday from Corvette Central, with folder.
I hope it's got decent wiring diagrams. Other people have been recommending buying laminated diagrams from Don Olson, but for a mere $5 more, I think the AIM will be invaluable.

 

[mkapp7879]

OK, crammed my head up under TWO dashs.
That green/green/blue connector hangs loose in my white79 also. This is a pretty much untouched 12K mile original Vette so I don't figure anyone has messed with it. Everything works as it should.
I can't seem to locate it in my black79, which makes me think it's hooked up. Don't want to start tugging on things either.
Difference in the 2 Vettes...black79 is a 4speed. Looking in the wiring diagrams in the 79 Shop Manual I see green and blue wires as part of the reverse lights hookup for 4speeds. Automatics use a slightly different setup.
Hope this helps, just tuck it back out of the way.

edit..possibly for the 4speed neutral start protection.

 

[mkapp7879]

Spring for an AIM. You'll be glad you did.

Toss that Chiltons out and get the 79 Corvette Shop Manual. That's the one with the red cover. See em on ebay all the time, or the vendors sell them too.

 

[dmdodd]

Toss that Chiltons out and get the 79 Corvette Shop Manual. That's the one with the red cover. See em on ebay all the time, or the vendors sell them too.

Righty, Blue/green, to be put back up and out the way.

Thanks again for the strenuous contortionistic act of squeezing yourself under there, it's a pain I know!

AIM is in the mail, and sure it'll helped significantly with future restoration/mods.
Thanks for all the advice.

~Dan