Super Cheap NOS 85-89 Mustang Capri Starter Relays
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86capri62
- Posts: 439
- Joined: Thu Jan 24, 2008 4:05 am
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Mike, not talking about this particular relay but sometimes a relay does have a polarity. Some have another internal wire connected to the positive terminal for another circuit purpose. Also I remember having read a TSB long time ago about starter relay causing problems to injection systems because of a diode in some other Ford models. But my memory could be wrong.
87 Ferrari Mondial 3.2 cabriolet(sold)
86 ASCMcLaren vert (sold)
80 corvette (sold)
77 Ferrari 308 GTB(sold)
90 Ferrari Testarossa(yellow)(sold)
2007 Corvette convertible supercharged(sold)
2005 MB SLK 350
2008 Rotorway helicopter
86 ASCMcLaren vert (sold)
80 corvette (sold)
77 Ferrari 308 GTB(sold)
90 Ferrari Testarossa(yellow)(sold)
2007 Corvette convertible supercharged(sold)
2005 MB SLK 350
2008 Rotorway helicopter
http://www.bcae1.com/relays.htm
There are a bunch of types of relays...so my description is overly simplified when you get into the other types. I suppose there might be relays setup like you mention. A diode would be something that might help protect current from going in the opposite direction.
The relay here shouldn't matter on the pos/neg. I am pretty sure, when I replaced my relay, I held it in my hand, grounded the relay, and then touched 12v to the small post. The internal switch "jumped" (almost dropped the thing)...so there is no need for this relay to be hooked up to a power source on the big posts to work correctly.
-Mike
There are a bunch of types of relays...so my description is overly simplified when you get into the other types. I suppose there might be relays setup like you mention. A diode would be something that might help protect current from going in the opposite direction.
The relay here shouldn't matter on the pos/neg. I am pretty sure, when I replaced my relay, I held it in my hand, grounded the relay, and then touched 12v to the small post. The internal switch "jumped" (almost dropped the thing)...so there is no need for this relay to be hooked up to a power source on the big posts to work correctly.
-Mike
1985 ascMcLaren Coupe - Midnight Blue
Under Restoration
Under Restoration