The Miracle of 12V Relays

Do you want to wire your car so that the Accessory circuit stays on until you open the door after you have turned off the ignition, like many modern cars? Built your own remote start system? Control headlights with a latching relay?

This page at The 12 Volt explains how to do that with standard 5-pin 12-volt relays. The entire site is dedicated to similar "tricks of the trade".

At Hotrodders.com, this page provides an overview of automotive uses of relays. This page also offers links to other useful pages, including headlight relays, assorted car wiring diagrams, auto wiring basics and a fix for power windows that use those stupid "wiring eliminators" in the door jambs.

Here, mechanical latching relays are explained.

GM-style power window switches are Dorman 901-018 or 49243 and the special pigtail is ACDelco PT185. A wiring diagram is found here.

A 12-volt latching relay is here.

Neutral Safety switch operation, wiring and installation information.

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A Heat Insulation Spray-on Coating Alternative to Lizard Skin.

One of the well-known spray-on heat-shield products is Lizard Skin. From their website, “LizardSkin Ceramic Insulation (CI) is an advanced spray on thermal coating that consists of a water-based composition of high-grade acrylic binders with ceramic insulation particles to create a thermal barrier.” The Material Safety Data Sheet (commonly referred to as the MSDS) can be found here . This sheet shows the composition of Lizard Skin as: 1 - Water 7732-18-5 40-50% 2 - Resin Polymer 00-00-00 20-30% 3 - Trade Secret Insulation Media 10-20% 4 - Carbon Black 1333-86-4 5-10% 5 - Extender Pigment 1317-65-3 1-5% It’s relatively expensive at $200 for two gallons. They sell a special gun ($120) to spray it on although it can be applied with a brush or roller. Substitutes It's possible to make your own for much less cost. 1 – High solids white latex ceiling paint. 2 - Acrylic Polymer Resin - increases paint flow and durability. One source is Acri-Flow

WTF is a Franzinator?

Sometimes the most useful things have the oddest names. Take the Franzinator, for instance. Named after Franz©, its curmudgeonly inventor, the Franzinator is a device used to separate moisture from compressed air. Having moisture in compressed air is not a a good thing, especially in painting where it contaminates the painted surface, or in media blasting where it causes the media to clump and not work as well. As well as causing rust in the air tanks and air tools, moisture is best removed. A number of methods have been developed from expensive refrigerated driers used to pre-condition air before it gets to the compressor, to simple mechanical separators that sit in the air line between the tanks and the air tool. Here is a tank that uses a chemical desiccant to dry the air. There are also ways to install the air lines that are intended to either cause moisture to condense or collect before it is sent to the air tool. A non-mechanical separator causes the moisture in the hotte

Keeping Your Compressor Quiet

Air compressors are noisy machines. The two most commonly used ways to quiet them down are to locate the air intake outside (not good for the neighbors) or to build some type of enclosure with sound deadening material inside; that usually causes overheating problems due to poor circulation. The best solution is to construct a silencer that uses the same principles as a gun silencer. But isn't that illegal? Only if you use it on a gun. We're using it on an air compressor. Still, this topic seems to be controversial, mostly by people who have a bury-your-head-in-the-sand approach to security and safety. Here are the materials: Pipe the same size the air compressor port will use, 16"-18" long. Some exhaust pipe, the same length as the other pipe. Some washers you have to make with a hole saw, enough to put one on each end and one every 1-1/2" that will fit around the air compressor intake port pipe and fit inside the exhaust pipe. Steel wool to fit betwe

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