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Re: Wiper and heater
Posted by: oldqmguy ()
Date: May 21, 2020 06:19PM

cnicol Wrote:
-------------------------------------------------------
>
> And yes, there are connections on the back of the fuse panel. (thanks to Dale Smalley aka oldgmguy)[/color]

Hey Craig! At least get my name right! drinking smiley

SMILEY (olqmguy)! grinning smiley

I hope the picture helps!!!

Dale cool smiley

Dale E. Smiley CPBE
Life Member The Society of Broadcast Engineers
RETIRED Broadcast Engineer
CERTIFIED CORVAIR NUT
CORSA/Circle City Corvairs/Corvair Performance Group
Avon, Indiana
WB9SFF
1967 4-Door Monza PG!

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Re: Wiper and heater
Posted by: MattNall ()
Date: May 21, 2020 06:31PM

ANY pic might help LOL

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Wiper and heater
Posted by: 66vairman ()
Date: May 21, 2020 07:08PM

He said he has a "68" model. Fuse box and wiring is NOT the same as 1965-66 models.

Refer to the 68 supplemental shop manual for wiring diagrams and fuse box picture.

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 21, 2020 07:53PM

I have the 68 supplemental and it appears there are a number of fusible link which might be my issue. It is confusing which wires need to be replaced. It is different than the 65 manual. I’ll study the 68 diagram some more and see if I can figure it out. It is a lot different from the 65.

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 22, 2020 10:19AM

I was reading the 68 supplemental manual and it says there’s a fusible link protesting 12 and larger gauge wires. It “is installed between the junction box and in-line connector”. I assume the junction box is the fuse box but where is the in-line connector?

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Re: Wiper and heater
Posted by: 66vairman ()
Date: May 22, 2020 10:57AM

Mertz - It's not junction box - it is "JUNCTION BLOCK" as noted in the wiring diagram. The junction block is the notorious plastic terminal with a screw into it on the engine compartment frame rail. In 65-66 it was about a foot forward of the battery tray. Not sure on 68.

There are three fusible links.
1 Between the junction block to the battery positive cable.
2 Between the junction block to the main supply wire (goes to the fuse panel) in the bulkhead connector.
3 Between the junction block and the #3 terminal on the regulator (factory style external regulated alternator).

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Re: Wiper and heater
Posted by: oldqmguy ()
Date: May 22, 2020 11:18AM

Looking at the 1968 Corvair Supplement Manual the "16 Gauge Black Fusible Link" (Capitol Letters provided by me) goes from the "+12 Volt Junction" in the engine compartment (an insulated STUD on the Frame that the positive lead from the Battery connects to) to a 10 Gauge RED wire (they are spliced together in the engine compartment) that goes into the wiring harness to the FRONT of the car.

The "In-Line Connector" they refer to is located in the FRONT of the car and is located BEHIND the "Defroster Duct!

There is NO "In-Line Connector" for this wire in the engine compartment!

IF this Fusible Link was open, NOTHING would work.

As usual, the Chevy diagrams leave much to be desired!

I hope this helps!

Dale cool smiley

Dale E. Smiley CPBE
Life Member The Society of Broadcast Engineers
RETIRED Broadcast Engineer
CERTIFIED CORVAIR NUT
CORSA/Circle City Corvairs/Corvair Performance Group
Avon, Indiana
WB9SFF
1967 4-Door Monza PG!

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 22, 2020 12:12PM

That helps a lot. Someone used heavy speaker wire from the battery to the frame. There is power to the front so it must be ok. The wiper wire then must have an internal break in it. The jumper works fine. I still haven’t isolated what is causing the power draw. Since the horns weren’t working I checked them and found the horn button was not probably installed. I think there must be a bad or loose wire under the dash somewhere.

BTW. I can’t find a ground wire for the gas tank sending unit. I tried grounding the tube and that did not help

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Re: Wiper and heater
Posted by: MattNall ()
Date: May 22, 2020 02:07PM

Have you tested the sending unit? It should read between 0 and 30 ohms, depending on amount of fuel in tank.

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 22, 2020 02:35PM

I have not tested it, wasn’t sure how. I will give it a try.

The good news is that I was able to look at the back of the fuse box. I saw some rust and a wire that was connected but loose. It came off when I turn the box around. I put it back together and now the heater works.

The bad news I still have the short. I check every connection front back and middle.

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Re: Wiper and heater
Posted by: Lane66m ()
Date: May 22, 2020 04:05PM

Late model is 90 ohms, isn't it? His is a 68.

Al Lane
Ellabell, GA 31308

1966 Monza Coupe, 110 hp, 4 Spd
1966 Monza More Door 110 hp, PG
1968 Camaro SS Coupe 350 CI 295+ hp PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
1947 Farmall A tractor 15 hp


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Re: Wiper and heater
Posted by: Mertz ()
Date: May 23, 2020 10:12AM

I could not get an ohm reading on the sending unit. I assume then it is bad.

I still have the short. I think I have eliminated the clock, cigarette lighter and the hazard. What is left on the circuit? What is ctsy

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 23, 2020 10:13AM

I get no ohm reading. Not even a zero

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Re: Wiper and heater
Posted by: MattNall ()
Date: May 23, 2020 10:21AM

Sender is bad.

CTSY is the DOME light center of headliner. Orange wire is hot all the time, White goes to door switches

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 23, 2020 02:22PM

I checked the dome light. The terminals are pretty rusty. I pulled the bulb and no more short. The light worked so I didn’t think that was the problem. I can’t see where the wire would be grounded.

Thanks everyone for the help.

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Re: Wiper and heater
Posted by: MattNall ()
Date: May 23, 2020 02:38PM

Wrong bulb? Should have 2 buttons...not one!

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 23, 2020 02:42PM

It’s a long bulb with metal caps on each side.

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Re: Wiper and heater
Posted by: Lane66m ()
Date: May 23, 2020 04:05PM

short is on downstream side of the bulb.

Al Lane
Ellabell, GA 31308

1966 Monza Coupe, 110 hp, 4 Spd
1966 Monza More Door 110 hp, PG
1968 Camaro SS Coupe 350 CI 295+ hp PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
1947 Farmall A tractor 15 hp


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Re: Wiper and heater
Posted by: joelsplace ()
Date: May 23, 2020 04:49PM

If the short is on the positive side taking the bulb out won't matter. If the short is on the negative side it will just make the bulb turn on.
If taking the bulb out stopped the short then something you moved when taking the bulb out is what did it not just removing the bulb.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: Wiper and heater
Posted by: Mertz ()
Date: May 23, 2020 05:24PM

Because of the rust I had to giggle the bulb to have it come on. Logic would say that the hot side is ok because the fault does not occur when the bulb is out. I bent the 2 leads to try to keep them from touching but I don’t think that is the problem because if they were touching the bulb would not light. I pulled the unit off the roof and it did the same thing. So it’s not contact with the roof framing. I suppose the light could light if there is power still getting to it even though there is a short and it has a ground.

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