The Ford Barn - View Single Post

Keith True · 09-19-2014, 06:40 PM

I know they all look alike,but work in different ways.I have a pile of those old ones,when I want to use one I have to sit down with a battery and some jumper wires and check out how they work.I have a couple that are activated when the switch GROUNDS the little terminal,not power it.I think those may have come from the glow plug setup for the 5.7 GM diesels.About 15 years ago I worked on one of the Miss Budweiser racing boats.I have no idea what class it was in,but it was Pinto powered.The pilot had installed a new solonoid,and it wouldn't crank.He had just picked up what looked like a Ford relay,it was actually a relay to run a Western snowplow pump.They all may look alike,but they may all work different.

09-19-2014, 06:40 PM	#10
Keith True Senior Member Join Date: May 2010 Location: Epping N.H. Posts: 3,421	Re: Start relay puzzle I know they all look alike,but work in different ways.I have a pile of those old ones,when I want to use one I have to sit down with a battery and some jumper wires and check out how they work.I have a couple that are activated when the switch GROUNDS the little terminal,not power it.I think those may have come from the glow plug setup for the 5.7 GM diesels.About 15 years ago I worked on one of the Miss Budweiser racing boats.I have no idea what class it was in,but it was Pinto powered.The pilot had installed a new solonoid,and it wouldn't crank.He had just picked up what looked like a Ford relay,it was actually a relay to run a Western snowplow pump.They all may look alike,but they may all work different.