Quote:
Originally Posted by RichardJ
Ford solenoids are over-kill, ugly and have the large posts hanging out in the open waiting for you to drop a wrench on them.
The Ford starter solenoids in some cases can handle as much as 300 Amps and may require as much as 5 Amps to energize.
The small Bosch type relays require less than 50 milliAmps to energize and many can handle 30 to 40 Amps.
I get mine from the wrecking yard. On GM cars from the mid '80s, up through the '90s you can find as many as ten on a single car. I pick the ones that have two or three 12 or 10 gauge wired to them and I know they are at least 30 Amps. Get the relay, plug and as much wire you might need. Usually a couple of bucks each and they have a low failure rate.
Get matching relay types and use a bank of them for fans ,headlights, AC or whatever.
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I don't think you read that correctly. You can't use a Bosch style relay for this fix. You are basically doing what Ford did on some 429/460s by using a remote solenoid on a Delco starter (look at PH140-006
http://bpi.ebasicpower.com/search2/s...?q=pcm+starter). You are moving the solenoid so that battery power and activation (purple wire) goes to it and then when it is energized you have full battery power on both the big lug and the "S" lug. The solenoid on the Delco starter still works, it just doesn't have to rely on the long length of purple wire to get power, it has a short piece of wire from the main lug to the "S" terminal (Ford used a metal plate when they did this-see post #2
http://www.hotrodders.com/forum/ford...er-201783.html also see post #15 for a circuit diagram).