DFRESH, I have one that looks like MR. Barry's. It's for an 85 Mustang GT. I figured since my car has the electrical and ignition from an 85 GT might as well get the same starter solenoid. I use a PMR mini starter on a 9.8:1 compression 306 works great.
I've heard that the solenoids used on Fords with FI have an internal diode that's supposed to prevent starter run on or something. They usually have only one small terminal instead of the two like those pictured above.
Usually, diodes are used to protect voltage sensitive electronics from a DC transient spike produced during a magnetic field collapse. Could someone rewrite this so I can understand what I wrote? Seriously, the diodes are used to protect the computer, so what you said makes sense.
If theres one on you starter, you don't really need one on the firewall. Most guys install one so there is a place to connect all the + cables.
There are other ways to do this. Visit the painless web site.
OK, so if you dont want to use a second relay (I am still not sure why you would need a second starter relay if there is one on the starter already, the only thing I can think of is that you might want to bypass the starter mounted relay and use a remote relay to get it away from the heat of the exhaust?) What do you need to do to use just one relay?
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