Forces Posted September 13, 2006 Share Posted September 13, 2006 The wiring on the Z I recently purchased is shoddy at best....wires twisted together and taped over with out butt-end connectors or sodder(including the positive battery cable!) and a whole bunch of other stuff. This is an easy, tedious, but easy fix. My problem is that the car was wired with minimal relays. The fan, the fuel pump, the gauges are all manual switch opperated......So when I go to start the car, once it's got an engine, I flip switches. When I am driving, and want the fan to come on, I flip switches. The manual over ride for the fuel pump is handy, but not if it is the only way to opperate it. Electrical wiring, as far as correct relays, 'always hot' wires, key-on-only power sources, this stuff is all greek to me. any usefull tips, websites to read...etc etc? Seann Quote Link to comment Share on other sites More sharing options...
VinhZXT Posted September 13, 2006 Share Posted September 13, 2006 I don't think there is any book explain this. What you need is to understand how relays work. There are 2 basic types of relays, 1 with 4 prongs and 1 with 5 prongs. The relays are basically serve the same purpose as the manual switches but you can control them electrically. Here is a basic layout of any standard relay: (if it's a 4 prongs relay it doesn't have pin 87A) 1. Pin 85 - coil 2. Pin 86 - coil 3. Pin 30 - common 4. Pin 87 - Normally Open (NO to pin 30) 5. Pin 87A - Normally Close (NC to pin 30). To activate a relay you need a 12V and ground to pins 85 and 86. Once the relay is activated it kicks the internal contact to connect pin 30 and pin 87. At the same time it will disconnect pin 87A and pin 30. There are numbers of ways to activate or control the relays. I will give you a simple example how you can wire up the electric fan. Connect pin 85 to ground, Pin 86 to 12V ignition, Pin 87 to Battery source thru some type of fuse and Pin 87 is the 12V feed to your electric fan. With this hookup your fan will turn on the second you turn on the key. Again there are numbers of ways you can think of to use the relay to control anything in the car. Hope this helps you a bit. Let me know if you need help or ideas wiring up something. Next lesson will be how to use pin 87A lol. GL Vinh Quote Link to comment Share on other sites More sharing options...
Guest harveje Posted September 13, 2006 Share Posted September 13, 2006 http://www.the12volt.com/ Has saved me many times, Also autoZone's web site has some fairly good wiring diags. I'm ebaying now for a lot of 10 relays and harnesses.. Quote Link to comment Share on other sites More sharing options...
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