Detroit Series 60 14.0L DDEC V Swap Harness — Cascadia 2009-2016

Two-harness system to install your Detroit Series 60 14.0L with DDEC V ECM in a 2009-2016 Freightliner Cascadia cab. Built, crimped and pin-by-pin verified at our lab in Houston, Texas.

The DDEC V advantage: no module needed

The DDEC V speaks native J1939, the same protocol your Cascadia's bus already uses. That changes everything compared to the DDEC IV swap:

• Your original steering wheel buttons keep working — cruise, engine brake and resume respond right where they always did.
• No conversion box — there's no in-between module to buy, power or troubleshoot.
• Fewer failure points — fewer connectors, less added electronics, fewer things that can fail on the road.
• Full dash — gauges, warning lights and readings work against the original cluster.

If your engine is the 14.0L with DDEC V, this is the cleanest and most affordable path for the swap.

Important before you buy

The 2009-2016 Freightliner Cascadia never left the factory with a Series 60: it came with DD13 and DD15 engines. This harness exists precisely to solve that adaptation, which has no OEM solution.

Confirm your configuration before paying: cab year, engine and ECM. Message us on WhatsApp and our technical team will verify it with you — it's free and keeps you from buying the wrong harness.

What's included

• External (engine) harness — connects the DDEC V ECM to the cab's bus.
• Internal (cab) harness — links the Cascadia's original cab to the engine's electronic controls.
• Plug & play installation through the original firewall opening — no cuts to the Cascadia's harness. The cab stays intact and the process is reversible.
• Quality-control certificate, with the SKU and version marked on the harness.

How it's built

• SAE J1128 certified automotive wire — insulation designed to withstand engine-bay heat, oil, diesel and coolant without drying out or cracking.
• Pull-test on every terminal — each crimp is verified with a calibrated tool.
• Pin-by-pin continuity against the ECM diagram before it leaves the lab. Zero guesswork.

Warranty and shipping

• 12-month warranty against manufacturing defects from the ship date.
• Ships the next business day from Houston, TX.
• Shipping to 13 Latin American countries via DHL Express with duties prepaid (DDP): it arrives ready for pickup, no customs surprises. United States via UPS.
• Real technical support in English and Spanish, on WhatsApp and by phone. No middlemen.

Frequently asked questions

My engine is a 12.7L DDEC IV, not a 14.0L. Does this harness work?
No. For the 12.7L with DDEC IV we have a different product, because that ECM doesn't speak native J1939 and the integration is different: go to the 12.7L DDEC IV harness.

Do I need to cut or modify my Cascadia?
No. It uses the original firewall opening and the factory harness is never cut. The installation is reversible.

Is this an OEM harness?
There is no OEM harness for this swap, because "Cascadia with a Series 60" is not a factory configuration. This is an integration harness designed and built by CTS for that combination.

How do I confirm it's the right one for my truck?
Send us your cab year, engine and ECM on WhatsApp. We'll confirm compatibility before you buy.