New guy 79 factory 4 speed wagon.

[t5montecarlo]

I think the small diagram is what you need. It shows the power source, the signal source, and the ground for each gauge.

This image is for 1988, should be very similar to yours.

 

[Mighty]

I’ll give it a look. The plug that comes out of the body for the fuel gauge right in front of the rear bumper was in plugged so I plugged it back in along with the ground wire and it didn’t change anything.

 

[t5montecarlo]

The diagram I linked to has the resistance specs for the sender, so you can see if your sender is within the range. You would need to remove it to test the full range. If you have 1/2 a tank of fuel and 0 ohms or 200 ohms, the sender is bad.

The full car wiring diagram is a multi-page pull-out graphic. It isn't easily imaged. If you need a specific unit wiring diagram, let me know. I have a 1982 and a 1986 book. My 1978 and 1979 service manuals don't have the color wiring diagrams; they were sold as a supplement.

My Haynes Monte Carlo book has the full car diagrams in black/white.

 

[Mighty]

Ok thank you. I’ll hopefully mess around with it some on Monday evening.

 

[t5montecarlo]

I found some ebay listings/searches that are good deals. The troubleshooting supplement includes the individual unit wiring diagrams, the wiring diagrams are of the full car. Unit repair is about the individual parts on the car. The service manual is an excellent deal. I recommend jumping on these deals now.

Three 1979 Chevrolet Manuals, Unit Repair, Service Manual, Wiring Diagrams

Three 1979 Chevrolet Manuals, Unit Repair, Service Manual, Wiring Diagrams | eBay

Find many great new & used options and get the best deals for Three 1979 Chevrolet Manuals, Unit Repair, Service Manual, Wiring Diagrams at the best online prices at eBay! Free shipping for many products!

www.ebay.com

1979 Electrical Troubleshooting Manual (search results; you can choose the one you want)

1979 Chevrolet Electrical Troubleshooting for sale | eBay

Get the best deals for 1979 Chevrolet Electrical Troubleshooting at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!

www.ebay.com

 

[t5montecarlo]

The listing with 3 manuals now has a lower price. Go for it (19.99 to 15.90). I wonder if it is an email offer just to me since I viewed it earlier?

 

[Mighty]

I also got the email after I looked at it the other day. Is there a way to tell if you can pay with a credit card by looking at the link? I just made an eBay account recently and I’m not super familiar with it yet. If I buy it I just want to be ready incase I have to make time to get a money order or something like that

 

[t5montecarlo]

You can pay by credit card. When you check out, you will see the payment options. You are paying eBay, not the seller.

I suggest you add the individual items to your cart and then check out so you pay only one time. eBay will pay the individual sellers.

 

[t5montecarlo]

Did you receive the books yet?

 

[Mighty]

Nope. Didn’t buy them….yet. Haven’t messed with the car in since my last post. I’ve been searching for rust free fenders for dodge truck project lately