Quote:
Originally Posted by joe231
Everything that I'm stating is the factory wiring
The black is chassis ground.
The orange wire is all time hot for the locks and is protected by a 30 amp breaker.
The pink is switched power for the windows so they will only work with the key on and they are protected by a fuse (not sure what amp rating)
the relay must be wired into the window circuit (power wires to the window motor) to see any benefit.
The link posted above (and the info in the post) is a relay mod for headlights and won't work for the windows.
You want to use the window switch to energize the relay to supply full battery voltage to the window motors.
If I were you I would get the power windows and locks installed first. Then once you have them in and working you can do the relay mod. Right now it seems to be confusing the issue.
In the mean time I will try to find the diagram for the mod, or try to find time to draw one up for you.
|
First, Yes, black is ground, orange is always hot and pink is switched ign.
Second,
NO. The use of a relay is only so that you do not overload the stock '73 fuse block. The stock wiring in the '87 doors is sufficient to handle the draw of the power window motors so no need to change that. The factory wiring diagram for the 87 lists the power windows protected by a 30A circuit breaker and wired with 12ga. wire.
Here is a picture of a 72 fuseblock, the layout is similar to the 73. It does not have any fuses larger than 25A, I would not load it with the draw of power windows hence the use of a relay and circuit breaker.
A relay is a remotely controlled switch that that can handle more current than the primary circuit. This is not a "mod" just proper application of an electrical device.
Imagine in the drawing of the lights, that you substitute the power window complete circuit for the lights themselves. I suppose I should draw it instead of being lazy and using someone else's work, albeit much prettier.
I hope this makes it clearer, if not ask away, I'll try harder.