HDCircuitry LLC

Directions Website

HDCircuitry LLC Custom wiring specializing in Ford Lightnings & Harley Trucks. Plug & Play line lock switches, batte

We all start somewhere.Back in 2002, Hyde had that tacky 2000s red wire loom on just about everything under the hood. To...
10/18/2026

We all start somewhere.

Back in 2002, Hyde had that tacky 2000s red wire loom on just about everything under the hood. Today it's the clean HDCircuitry wiring way: tucked, tidy, and built to last.

Same idea goes into every plug-and-play HDC kit.
https://www.hdcircuitryllc.com

What's the most 2000s mod you ever ran? Be honest.

Dual Raptor fans. Plug-and-play.HDC Electric Fan Harness Kit (Raptor Fans). Built to run OEM or aftermarket Raptor/2010+...
10/17/2026

Dual Raptor fans. Plug-and-play.

HDC Electric Fan Harness Kit (Raptor Fans). Built to run OEM or aftermarket Raptor/2010+ F-150 dual fans (Motorcraft RF355, fans not included) in 99–04 SVT Lightning, 00–03 Harley F-150, and 97–03 F-150 (and 04 Heritage). The fans trigger on engine temp, A/C, and a manual override switch. Color directions included.

Heads up: the Raptor shroud needs minor trimming (photo of the recommended trim included), plus a simple flat 2-hole bracket you fab to shift one bolt location.

Running a different fan? The same harness also comes in a Mark VIII version for a dual-speed single fan, and a universal version for Flex-a-lite, SPAL, and other dual fans.

https://www.hdcircuitryllc.com/products/hdc-electric-fan-harness-kit-raptor-fans

What fan setup are you running right now?

Harley truck for drag racing. SRT10 for banging gears. Cybertruck for daily driving. Now all I need is the Roadster for ...
10/16/2026

Harley truck for drag racing. SRT10 for banging gears. Cybertruck for daily driving. Now all I need is the Roadster for literal flying! 🚀

If my 845 hp Cyberbeast triggers folks because it's an EV, will a 0.8 second 0-to-60 Roadster trigger folks because it has cold gas thrusters? lol

📸 Tesla

10/16/2026

We all start somewhere.

Hyde in 2005 at the DelValLO Bridge to Bash Rally, before the supercharger. Back then it made around 200 hp to the tires. Today it's near 1,000.

A lot has changed since then. The love of shredding tires hasn't. The end card on this old video even says "Time for tires... & a blower!!!" and that's exactly what came next.

Every step from there to here needed wiring that could keep up. That's what HDCircuitry kits are built for.
Shop link in bio

Where did your build start?

Stronger crank. Better heat sleeving.HDC Starter Cable Upgrade Kit. It replaces the OEM 4 AWG starter wiring with 2 AWG ...
10/13/2026

Stronger crank. Better heat sleeving.

HDC Starter Cable Upgrade Kit. It replaces the OEM 4 AWG starter wiring with 2 AWG power and 4 AWG grounds, plus significantly improved heat sleeving. Works with the battery up front or relocated out back.

Fits 99–04 SVT Lightning, 00–03 Harley F-150, 97–03 F-150 (and 04 Heritage), and 98–03 Expedition.

Pair it with the Big 3 Battery Cable Upgrade Kit if the battery stays up front, or with the Battery Relocation Cable Kit if you're moving it out back. Together, separately, or later.

Shop link in bio

Still running the factory starter cables?

Throwback to October 2002: Fords @ Englishtown.Hyde took 1st place and a class winner jacket. We've had this 2000 Harley...
10/11/2026

Throwback to October 2002: Fords @ Englishtown.

Hyde took 1st place and a class winner jacket. We've had this 2000 Harley-Davidson F-150 since it was new in July 2000, and by 2002 it was already getting mods and show-ready.

Twenty-plus years later, I'm still building wiring for these trucks. That's how HDCircuitry kits got started.
Shop link in bio

Ever take home a show trophy? Tell me about it.

Full voltage to every pump.HDC Fuel Pump Harness Kit (Billet Fuel Hat). It uses the factory wiring to trigger the harnes...
10/10/2026

Full voltage to every pump.

HDC Fuel Pump Harness Kit (Billet Fuel Hat). It uses the factory wiring to trigger the harness, so the factory fuel cutoff safeties stay in place, but upgraded wiring powers the pumps to cut voltage drop. Even on stock pumps, that has shown a 13 psi increase in fuel pressure. Two pairs of pump wires match up to a billet hat, and color directions are included.

Fits 99–03 SVT Lightning, 00–03 Harley F-150, and 97–03 F-150 (and 04 Heritage). Pick Lightning/120" or Harley/139" wheelbase.

Running an OEM hat? That's the OEM Hat kit. Want a third pump on its own trigger (hobbs, toggle, or WOT switch)? The Third Pump Add-on pairs with the Billet kit.

Shop link in bio

What pump setup are you running?

10/10/2026

Walkaround on Hyde.

We've had this 2000 Harley-Davidson F-150 since it was new in July 2000, build #356 of 8,197. Today it's running a 4-valve Ford GT engine with a 4.9L Kenne Bell, behind an 8.50-certified cage. The plate says the rest.

A lot of the wiring under that hood is where HDCircuitry kits got their start.
Shop link in bio

How long have you had your truck?

Fat cables. Battery stays up front.HDC "Big 3" Battery Cable Upgrade Kit. It takes your OEM 4 AWG cables to 1/0 AWG: alt...
10/06/2026

Fat cables. Battery stays up front.

HDC "Big 3" Battery Cable Upgrade Kit. It takes your OEM 4 AWG cables to 1/0 AWG: alternator to starter solenoid, battery positive to solenoid, battery negative to firewall, plus an aux engine-to-frame ground. The factory fused positive stays, just in 1/0. Upgraded terminals, fuse cover, boots, and hardware are included.

Fits 99–04 SVT Lightning, 00–03 Harley F-150, 97–03 F-150 (and 04 Heritage), and 98–03 Expedition.

Want the starter side done too? The HDC Starter Cable Upgrade Kit pairs with it, together, separately, or later. Moving the battery out back instead? That's the job for the Battery Relocation Cable Kit.

Shop link in bio

What's still running stock wiring on your truck?

Hood up on Hyde.This 2000 Harley F-150 has been through more builds than I can count — and the bay still has to look as ...
10/04/2026

Hood up on Hyde.

This 2000 Harley F-150 has been through more builds than I can count — and the bay still has to look as good as it runs.

The same truck that got me deep into clean plug-and-play wiring.
Shop link in bio

What's the first thing you look at under a hood?

Address

Manahawkin, NJ
08050

Website

Alerts

Be the first to know and let us send you an email when HDCircuitry LLC posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category