This quick technote details the CIS-E wiring harness, as found in a 1987 VW Scirocco. This should be similar for any 1.8L 16v.
You know those numbers on the back of switches, relays, panels and more? They are the DIN standard terminal numbers. They can help you troubleshoot electrical problems. For example, Terminal 15 is ignition on power. Read on for the big list!
This technote will be all about the Megasquirt relay board. I have just ordered one, and I will install it after the MD/PA Megasquirt Tech weekend GTG.
This quick and easy technote will show you how to wire foglights into your car. You also have the option of wiring them so that they only come on with the lowbeams, in case your state inspection requires that.
This article is about the Throttle Position Sensor on the throttle body, and why you may not need it at all.
Why relay your headlights? What is a relay even? All of your questions are answered right here! Relays make your headlights brighter by directly connecting them to the battery with a sort of remote switch called a Relay. It is a required modification for Scirocco II with European lights, the wires are different, and the wattages are higher.
US headlights on a lot of our cars have very low wattage, sometimes as low as 35watts. European headlights with H4 bulbs start out at 55 watts and can go above 120 watts per bulb. Stock wiring cannot handle this extra load. The way the headlight system works in a VW is for the power to go from the Battery to the fuse panel, through the load reduction relay, then up to the headlight switch, then all the way back out to the headlights.
A headlight relays system acts as a remotely controlled switch. Now the power runs from the battery to the relay to the headlight – a very short distance. The relay is told to turn on by the stock wiring. A relay uses far less current than the headlights do, taking a load off of your electrical system, and making your switch last longer.