1‑800‑243‑8355
Help
Contact Us
Free Shipping
Shipping Information
Manufacturer Rebates
How To Order
Payment Options
Return Policy
FAQs
Emissions Regulations
Gift Card Balance
Sponsorship Opportunities
Company
Request Catalog
OPGI Blog
Hours & Location
History
Frequent Buyer Points
Volume Discounts
Price Match Guarantee
Kit Swap Savings
Reviews
Careers
Clearance Sale
Archives
My Account
My Orders
My Wish List
As seen on
1973
K25/K2500
My Garage
55
View Garage
1973
GMC
K25/K2500
Shop Parts
Filter Search
1959
Cadillac
Eldorado
Shop Parts
Filter Search
1968
Cadillac
Fleetwood
Shop Parts
Filter Search
1964
Pontiac
Catalina
Shop Parts
Filter Search
1974
Oldsmobile
Cutlass
Shop Parts
Filter Search
1966
Oldsmobile
Cutlass
Shop Parts
Filter Search
1980
GMC
C25/C2500
Shop Parts
Filter Search
1972
Pontiac
GTO
Shop Parts
Filter Search
1985
Buick
Grand National
Shop Parts
Filter Search
1979
Cadillac
Seville
Shop Parts
Filter Search
1985
Buick
Regal
Shop Parts
Filter Search
1969
Cadillac
60 Special
Shop Parts
Filter Search
1955
Cadillac
Eldorado
Shop Parts
Filter Search
1978
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1966
Cadillac
Eldorado
Shop Parts
Filter Search
1993
Cadillac
60 Special
Shop Parts
Filter Search
1969
Buick
Riviera
Shop Parts
Filter Search
1971
Pontiac
Catalina
Shop Parts
Filter Search
1965
Chevrolet
El Camino
Shop Parts
Filter Search
1966
Buick
Skylark
Shop Parts
Filter Search
2014
Cadillac
CTS
Shop Parts
Filter Search
1976
Chevrolet
Suburban
Shop Parts
Filter Search
1973
Pontiac
LeMans
Shop Parts
Filter Search
1997
Cadillac
Eldorado
Shop Parts
Filter Search
1974
Buick
Riviera
Shop Parts
Filter Search
1965
Buick
Riviera
Shop Parts
Filter Search
1968
Pontiac
Bonneville
Shop Parts
Filter Search
1985
Oldsmobile
Cutlass
Shop Parts
Filter Search
1965
Chevrolet
Corvair
Shop Parts
Filter Search
1964
Chevrolet
Chevelle
Shop Parts
Filter Search
1967
Cadillac
Fleetwood
Shop Parts
Filter Search
1965
Pontiac
GTO
Shop Parts
Filter Search
1967
Oldsmobile
Cutlass
Shop Parts
Filter Search
1969
Pontiac
LeMans
Shop Parts
Filter Search
1993
Cadillac
Fleetwood
Shop Parts
Filter Search
1972
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1970
Pontiac
LeMans
Shop Parts
Filter Search
1973
Pontiac
Bonneville
Shop Parts
Filter Search
1970
Oldsmobile
Cutlass
Shop Parts
Filter Search
1957
Cadillac
Series 62
Shop Parts
Filter Search
1976
Buick
Riviera
Shop Parts
Filter Search
2003
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1963
Buick
Riviera
Shop Parts
Filter Search
2005
Cadillac
CTS
Shop Parts
Filter Search
1975
Pontiac
Catalina
Shop Parts
Filter Search
1977
Chevrolet
Chevelle
Shop Parts
Filter Search
1968
Pontiac
Tempest
Shop Parts
Filter Search
1987
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1966
Pontiac
GTO
Shop Parts
Filter Search
1965
Pontiac
Catalina
Shop Parts
Filter Search
1989
Cadillac
Eldorado
Shop Parts
Filter Search
1977
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1986
Buick
Regal
Shop Parts
Filter Search
2011
Cadillac
CTS
Shop Parts
Filter Search
1970
Pontiac
Tempest
Shop Parts
Filter Search
Shop All Parts
+ Add Vehicle
Catalogs
Cart
Have a Question?
Ask our Experts
Mon‑Fri 8:00‑4:30 PT
Experts Offline
Interior
Door Handles & Hardware
Door & Window Handles, Door Hinges
Emblems
Reproduction, Aftermarket, Kits, Hardware
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Gauges & Accessories
Gauges, Panels, Kits, Sending Units
Interior Accessories
Armrests, Carpet, Flooring, Consoles, Dash, Door, Glove Box
Keys & Locks
Hardware, Keys, Locks, Sets, & Switches
Exterior
Decals
Decals, Body Stripes, Misc
Emblems
Reproduction, Aftermarket, Kits, Hardware
Exhaust
Mufflers, Headers, Pipes, Mainfolds, Tips, Kits
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Gaskets & Seals
Adhesives, Gaskets, Seals, Weatherstripping
Keys & Locks
Hardware, Keys, Locks, Sets, & Switches
Lamps & Lenses
Headlights, Lamps, Lenses, Bulbs, Hardware
Wheels & Accessories
Lug Nuts, Bolts, Studs, Wheels, Accessories
Body Parts & Trim
Bumpers & Hardware
Bumpers, Hardware, Inserts, Brackets
Door Handles & Hardware
Door & Window Handles, Door Hinges
Moldings
Front End, Rear, Side, Window, Hardware
Sheet Metal & Body Panels
Doors, Hoods, Fenders, Quarter, Trunk, Floor, Armrest
Trunk Panels & Accessories
Mats, Dividers, Hardware, Accessories
Window
Glass, Motors, Regulators, Hardware
Suspension & Brakes
Brake Systems
Disc, Drum, Master Cylinders, Boosters, Pumps, Valves
Chassis & Suspension
Bushings, Mounts, Chassis, Steering, Suspension
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Engine & Drivetrain
Air & Fuel Delivery
Air Cleaners, Filters, Carburetors, Pumps, Tanks, Manifolds
Cooling & Heating
Air Conditioning, Controls, Fans, Motors, Cores, Radiators, Thermostats, Heaters, Pumps, Ducts
Decals
Decals, Body Stripes, Misc
Drivetrain
Differentials, Driveshafts, Chaines, Shifters, Transmissions, Bearings, Seals
Emblems
Reproduction, Aftermarket, Kits, Hardware
Engines & Components
Belts, Pulleys, Camshafts, Heads, Oiling Systems, Engines
Exhaust
Mufflers, Headers, Pipes, Mainfolds, Tips, Kits
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Fittings & Hoses
Fittings, Clamps, Brackets, Hoses, Lines, Plugs, Tubing, Valves
Gaskets & Seals
Adhesives, Gaskets, Seals, Weatherstripping
Ignition & Electrical
Alternators, Wiring, Horns, Starters, Distributors
Oils, Fluids & Sealer
Oils, Fluids, Grease, Lubricants, Grease, Cleaners, Sealers, Glues
Windshield Washer
Bottles, Pumps, Arms, Motors, Switches, Hardware
Audio & Electric
Gauges & Accessories
Gauges, Panels, Kits, Sending Units
Ignition & Electrical
Alternators, Wiring, Horns, Starters, Distributors
Mobile Electronics
Antennas, Radios, Speakers, GPS, iPod, Bluetooth
Tools & More
Books
Owners Manuals, Service Manuals, History
Car Care & Paint
Covers, Cleaners, Waxes, Polishes, Paints, Coatings, Dyes, Markers
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Gifts & Apparel
Shirts, Jackets, Hats, Plates, Garage Decor
Tools & Shop Equipment
Brake, Electrical, Engine, Fuel, Hand, Suspension, Wheel, Tire
×
We use cookies to ensure that we give you the best experience on our website. Click
here
for more information.
Got It
250th Anniversary Sale
Save up to 20% on Restoration - use code: USA250
Home
K25/K2500
1973
Ignition & Electrical
Electrical Wiring
1973 GMC K25/K2500
Electrical Wiring
Filters
12
24
36
48
60
96
120
Relevance
Best Selling
A-Z ↓
Z-A ↑
Highest Price ↑
Lowest Price ↓
Newest Arrivals
×
Product Type
Aftermarket
48
Performance
29
Restoration
50
Part Type
Auto Trans Kick Down
2
Auxiliary Heater Switch Connector
2
Battery
15
Battery Cable Harness
1
Battery Ground Cable
1
Battery Relocation Kit
1
Body Wiring Harness
2
Brake Light Switch
1
Chassis Wire Harness
5
Clamp Value Pack
1
Dashboard Wiring Harness
1
Distributor Wire Harness
1
Dome Lamp Connector
1
Electrical Clamp
12
Engine Compartment Insulation
4
Engine Wiring Harness
5
Fuel Pump Relay
1
Grommet
1
Headlight Relay
2
Headlight Wiring Harness
1
Heat Shield Insulator
5
Instrument Panel Light Socket
3
License Plate Light Wiring Harness
1
Neutral Safety Switch
1
Radio Wire Harness
3
Spark Plug Boot Heat Sleeve
1
Spark Plug Wire Holder
3
Tachometer Wire Harness
2
Tie Strap and Clip
1
Tubing
1
Windshield Washer Switch
1
Wire Separator
9
Wire Wrapping Tool
2
Wiring Harness Tape
2
Wiring Relay
1
Uncategorized
31
Category
Charging Systems
15
Dash & Accessories
3
Electrical & Electrical Testing Tools
2
Electrical Wiring
127
Fuel Pumps & Regulators
1
Gauges, Panels & Kits
1
Headlights
1
Lamp Hardware
1
Lines
4
Pedal Pads
1
Shifters
1
Spark Plug Wires & Accessories
27
Steering Components
1
Tubing
9
Price
$1 - $100
74
$101 - $200
12
$201 - $300
6
$301 - $400
10
$401 - up
25
New Arrival
New
40
Brand
American Autowire
3
Antigravity Batteries
15
Lokar
27
M&H
38
MSD
1
Painless Performance
26
Thermo-Tec
5
Review Rating
ooooo
ooooo
6
ooooo
ooooo
5
ooooo
ooooo
1
Not Yet Reviewed
115
Painless Performance
Wire Wrap, Painless Classic Braid, 3/4" Diameter, 6' Length
ooooo
ooooo
$31.99
Painless Performance
Powerbraid Wire Wrap, 1/4"-diameter, 20-feet
ooooo
ooooo
$31.99
Painless Performance
Powerbraid Installation Tool , 1"
ooooo
ooooo
$14.99
SALE
Tape, Wire Harness, (Roll)
ooooo
ooooo
$10.99
Save an extra 20%
Use
USA250
at checkout
NEW
M&H
Wire Harness, Trailer Light Adapter, 1967-82 GM Truck, Stepside/Fleetside Only
ooooo
ooooo
$103.99
NEW
M&H
Wiring Harness, Rear Light, 73-75 C/K20, C/K30 w/Camper, 76-78 C/K30 Dually
ooooo
ooooo
$319.99
SALE
Tubing, Cloth Insulation, 3/16" X 30"
ooooo
ooooo
$8.99
Save an extra 20%
Use
USA250
at checkout
NEW
M&H
Wiring Harness, Dome Lamp, 1973-82 GM Truck, 2-Door, Exc. Blazer/Jimmy
ooooo
ooooo
$42.99
NEW
M&H
Wire Harness, Kickdown Extension, 73-74 GM Truck, 454 w/TH400, Switch to Dash
ooooo
ooooo
$43.99
NEW
M&H
Wiring Harness, Dome Lamp to Extension, 1973-74 GM Truck, 4-Door
ooooo
ooooo
$49.99
NEW
M&H
Wiring Harness, Rear Fender Marker Lamp, 1973-78 GM Truck, Dually
ooooo
ooooo
$223.99
NEW
M&H
Wire Harness, TH400 Kickdown, 1973-74 GM Truck, 454 V8, Dash Side
ooooo
ooooo
$74.99
Socket, Instrument Panel Lamp, 1/2" Hole
ooooo
ooooo
$3.99
NEW
M&H
Wiring Harness, Rear Light, 1973-78 GM Trucks, Stepside Long Bed
ooooo
ooooo
$252.99
NEW
M&H
Wiring Harness, Rear Light, 1973-84 GM Trucks, Fleetside
ooooo
ooooo
$251.99
NEW
M&H
Wiring Harness, Engine, 1973 GM Truck/Suburban/Blazer/Jimmy, 6 Cylinder
ooooo
ooooo
$351.99
NEW
M&H
Wiring Harness, Engine, 1973 GM Truck/Suburban/Blazer/Jimmy, V8, 307/350
4 Transmission Options
ooooo
ooooo
$334.99
NEW
M&H
Wiring Harness, Engine, 1973 GM Truck/Suburban/Blazer/Jimmy, V8, 454
4 Transmission Options
ooooo
ooooo
$334.99
NEW
M&H
Wiring Harness, Engine, 1973 GM Truck/Suburban/Blazer/Jimmy, 305/350 w/HEI
4 Transmission Options
ooooo
ooooo
$351.99
NEW
M&H
Wiring Harness, Rear Light Intermediate, 1973-74 GM Truck, Short Bed
ooooo
ooooo
$119.99
NEW
M&H
Wiring Harness, Rear Light Intermediate, 1973-74 GM Truck, Long Bed
ooooo
ooooo
$121.99
NEW
M&H
Wire Harness, Radio to Center Front Speaker, 1973-77 GM Truck, Exc Stereo
ooooo
ooooo
$41.99
NEW
M&H
Jumper Wire, Brake Warning Switch, 1973-77 GM Truck/Suburban/Blazer/Jimmy, 4WD
ooooo
ooooo
$34.99
NEW
M&H
Wiring Harness, Rear Light, 1973-78 GM Trucks, Stepside Short Bed
ooooo
ooooo
$251.99
Page 2 of 6 - 127 Items
«
1
2
3
4
5
»
Page 2 of 6 - 127 Items
«
1
2
3
4
5
»
Free Ground Shipping
Free Ground Shipping on orders over $299 in the contiguous United States.
Shop Clearance
Save up to 55% on huge clearance deals on hundreds of items.
Earn Points for Free Parts
Earn points for every dollar you spend with OPGI’s Frequent Buyer Rewards Program.
Price Match Guarantee
We’ll price match any currently advertised retail price offered by a retail competitor.
Select Your Vehicle
Find parts that fit your vehicle
GM Cars
GM Trucks
Make
Model
Year
Go