zzdcar
Home
/
Reviews
/
Tech
/
DIN Rail And Smurf Tube: How To Wire Your Race Car On The Cheap
DIN Rail And Smurf Tube: How To Wire Your Race Car On The Cheap-October 2024
2024-02-19 EST 22:10:43

As the inches ever closer to readiness, team captain has decided that the duct-tape-and-speaker-wire electrical system isn't going to be very reliable on the track. Time to tear out all the scary old stuff and start over fresh! Now, they could have followed my example and spent about 88,000 hours scratchbuilding a , but there's no need for that madness when you've got Jack Astro (of fame) on the team!

The old wiring really is scary- the kind of thing you often find in a 42-year-old Detroit beater you got for free. How about heavy-gauge wire splices made from ring terminals held together with a screw and "insulated" with crumbling electrical tape? The horror!

But new wiring stuff costs money, and these poor bastards have the misfortune of frequent garage visits by a , who is sure to jack up his to stratospheric heights if he catches them blowing past the 500-buck spending limit. Mr. Astro is an electrician, however, specializing in wiring up office buildings, shopping malls, etc, so he has the solution…

and He's working on wiring a hospital now, and some new equipment came with DIN rail terminal blocks in European-spec colors (you can't use the wrong colors- somebody might get zapped) so into the trash bin they went. Hooray for scavenging your race car parts from a dumpster!

This stuff is great- you can just keep stacking blocks on the rail, with as many inputs as you like and there's no problem adding new stuff- attaching wires is just a matter of poking a screwdriver into a slot and inserting the wire in the correct hole. The green blocks are grounded to the rail, which is screwed to the car's body. Want to add a police siren and an ooogah horn? Easy!

First, the guys who like to think things out before they start cutting holes in the car- that seems kinda weird, but whatever- make a wiring plan.

A couple of rails mounted behind the glovebox door will provide power to instrument panel items. Note the street-sign mounting plate.

The team donated our car's unneeded fusebox to the Belvederians (one of our team members works for a transit bus manufacturer, so we have a nice free bus-grade circuit-breaker box in our car), and the Volvo 240 unit turns out to be an excellent universal fusebox (as long as you don't mind those funky European ceramic fuses). Here it is mounted on the dash; the wiring will go through that split-loom-edged defroster vent.

Under the hood, blocks on either side of the engine compartment. That blue conduit stuff is , commonly known as "Smurf Tube" for obvious reasons. It's tough and easy to work with, and plenty of short pieces get tossed in the dumpster- aka Race Car Parts Bin- at job sites. They're replacing the old electrical system bit by bit, so you can see some of the scary old stuff side-by-side with the safe new stuff in this shot.

For brake lights, fuel gauge sender, and weird trunk-mounted secret weapons, there's another wiring outpost mounted in the rear of the car. Note the handy wiring diagram drawn in Sharpie on the sheet metal.

Comments
Welcome to zzdcar comments! Please keep conversations courteous and on-topic. To fosterproductive and respectful conversations, you may see comments from our Community Managers.
Sign up to post
Sort by
Show More Comments
Tech
Only Half Of Drivers Want Semi-Autonomous Tech In Their Next Vehicle
Only Half Of Drivers Want Semi-Autonomous Tech In Their Next Vehicle
Americans are somewhat starting to warm up to the idea of fully-autonomous vehicles, but, interestingly, less drivers are interested in having their new cars equipped with semi-autonomous technology like Tesla’s Autopilot or General Motors’ . That’s according to a new study from the American Automobile Association. In early 2017, the...
Oct 14, 2026
Here's A Tesla Semi In The Wild
Here's A Tesla Semi In The Wild
Tesla has taken hundreds of orders for a new all-electric semi truck that, , it’ll have in production by 2019. With right now, that’s surely a tall order to fill—but for now, there’s at least this brief sighting in California. The 7-second clip was uploaded on YouTube last week, and...
Oct 14, 2026
Motorcyclist Sues GM Over Crash With Self-Driving Chevy Bolt
Motorcyclist Sues GM Over Crash With Self-Driving Chevy Bolt
Oscar Nilsson filed a lawsuit against General Motors Monday concerning a collision between Nilsson on his motorcycle and a Chevy Bolt involved in GM’s Cruise self-driving test program in San Francisco. The crash occurred on December 7, where Nilsson claims a Chevy Bolt involved in GM’s self-driving testing program swerved...
Oct 14, 2026
Ford Has An Idea For An Autonomous Police Car That Could Find A Hiding Spot
Ford Has An Idea For An Autonomous Police Car That Could Find A Hiding Spot
Here’s something to make you squirm: Ford has submitted a patent application to the U.S. Patent and Trademark Office for that could function “in lieu of or in addition to human police officers.” Now, companies always file patents for technology that may never get made, but an autonomous police cruiser...
Oct 14, 2026
Tesla's Making Model 3 Batteries By Hand Amid More Gigafactory Problems: Report
Tesla's Making Model 3 Batteries By Hand Amid More Gigafactory Problems: Report
The is said to be in production hell as the automaker scrambles to ramp up and meet demand and orders for the new electric sedan. There have been multiple reports of hand-built parts that should be automated, delays and poor quality control. Now Tesla employees claim batteries are also being...
Oct 14, 2026
Faraday Future Demands ‘Loyalty’ And No ‘Negativity’ As It Fires HR Chief
Faraday Future Demands ‘Loyalty’ And No ‘Negativity’ As It Fires HR Chief
Faraday Future kicked off 2018 with and a few promo videos shot by to review its prototype. The company , but it’s still having problems: It’s head of HR is out, , which obtained a noteworthy email after the departure. Crystal Peterson had been Faraday’s HR director for about three...
Oct 14, 2026
Copyright 2023-2026 - www.zzdcar.com All Rights Reserved