If you’re diving into a classic Chevy or GMC project, this engine harness is a solid piece to consider. It’s designed to hook right into the dash harness at the firewall, making it a straightforward upgrade for your ride. You’ll find it connects to all the essential circuits—think ignition coil, wipers, heater blower, starter, temperature, oil pressure, and a few others, depending on what year and options your truck has. It’s pretty handy for keeping everything running smoothly.

Now, let’s talk specifics. Depending on your truck's engine size and transmission type, you might notice some variations, especially if your ride has those vintage warning lights or factory gauges. This harness is tailored for a range of models, so you’re covered whether you’ve got a C/K 10 from '64 to '67 or a GMC 2500 Series from '64 to '65. Just make sure to check that your model matches up with the fitment to avoid any surprises down the road.

Here’s the lineup of what this harness fits:

• Chevrolet C/K 10: 1964-1967
• Chevrolet C/K 20: 1964-1966
• Chevrolet C/K 30: 1964-1966
• Chevrolet Suburban: 1964-1966
• GMC 1000 Series: 1964-1965
• GMC 1500 Series: 1964-1965
• GMC 2500 Series: 1964-1965
• GMC C/K 15: 1966
• GMC I1000: 1966
• GMC I1500: 1966
• GMC I2500: 1966

This harness is a great way to keep your classic truck running like it should. If you’re looking to restore or upgrade, this is one of those parts that just makes sense. Check out the video below for a closer look at how it all comes together.