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*gmachinz* · 02-06-2014, 10:56 PM

There are a lot of ways to use relays.....just remember there are two types of relays when it comes to 5-pin styles. You have SPST and SPDT. The difference is you could have two #87 terminals SPST and one 87 and an 87a which is SPDT. What this means is 87a and 30 are latched until 86 is powered if 85 is ground. Dual 87 terminals just means you have two circuits powered simultaneously. For voltage carrying you have options but for ground triggering you have a lot more-this is the basis behind most power door lock kits and even power window systems. Relays can carry a voltage signal or complete a ground path.

02-06-2014, 10:56 PM	#8
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: LS swap cooling fans There are a lot of ways to use relays.....just remember there are two types of relays when it comes to 5-pin styles. You have SPST and SPDT. The difference is you could have two #87 terminals SPST and one 87 and an 87a which is SPDT. What this means is 87a and 30 are latched until 86 is powered if 85 is ground. Dual 87 terminals just means you have two circuits powered simultaneously. For voltage carrying you have options but for ground triggering you have a lot more-this is the basis behind most power door lock kits and even power window systems. Relays can carry a voltage signal or complete a ground path.