On ALL trucks in '76 and '77, whether single OR dual tanks, the fuel gauge wire (tan) comes from the main bulkhead connector at the firewall & routes through the engine wiring harness: it follows the starter wires through the heat shield tube by the RH exhaust manifold, then branches off & is clipped on the inside of the RH frame rail & ends at the RH fuel tank. Wire has the round rubber "push-on" connector. This wire is the same length on all trucks because it's part of the engine wiring harness -- GM did this to minimize the number of different engine wiring harnesses they had to make.
This tan wire plugs into the RH tank sender on 1-tank trucks. On 2-tank trucks it plugs into the dual-tank wiring harness instead.
The dual-tank harness plugs into a round grommet in the firewall just to the right of the distributor cap area (if you have a V8) This harness goes straight down & follows the LH frame rail.
The blue wire exits the harness first & attaches to the the LH tank sending unit.
The harness crosses over to the RH side & ends close to the selector valve. The green wire goes to the selector valve.
The tan/white wire attaches to the RH tank sending unit.
The tan wire attaches to the fuel gage wire discussed above.
It sounds weird but yeah, that tan circuit does make one big loop around the whole front half of the truck. If you are wiring from scratch you can cheat & just run the tan wire from the back of the fuel gage directly to the tan wire on the fuel tank selector switch.
The switch sends power through the green wire to the selector valve when it's at the LH position.. so if the unit goes bad, you will be pulling from the RH tank.
Dual-tank wiring setups changed several times from '73 to '87 so this only applies to the earlier trucks. Not sure when the changeovers occurred.
You will most likely find the wiring schematic for your Chevrolet in your vehicle's owner's guide. If it is not there, you should probably contact a professional.
When making changes to anything electrical it is important to have a diagram. A wiring diagram for a the fuse box in a 1976 Chevy can be found in the cars maintenance manual.
Here is the wiring diagram:
A person can get a wiring diagram for this vehicle in the maintenance manual. It can also be found in this cars repair manual.
look in the haynes manual for that year corvette
chiltons repair manual for your car.
The 1976 Chevrolet C 10 ignition switch cylinder instructions can be found at most Chevrolet dealerships. The instructions can also be obtained from most auto-parts stores.
Where could I find a wiring diagram for a 1976 VW super beetle? Either in the Bently repair manual (the orange one): http://www2.cip1.com/SearchResults.asp?Search=Bently&Search1=Search If you are keeping the car it is well worth the money. Or one of the VW Bug forums like: http://www.thesamba.com/vw/ And search for "1976 Super wiring diagram".
You can find a fuse box layout wiring diagram in the Haynes 1976 Firebird Repair Manual. The manual is available at auto parts and major book stores.
1976 Gmc 4 wheeldrive 350 engine
While looking for a wiring diagram myself, I foud your question and this site. Maybe it will help. http://www.bdub.net/wirediagrams/index.html
Chevrolet Chevette was created in 1976.