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rick lester · 06-09-2009, 02:32 AM

i just hooked up electric fans using a summit kit. fans are from a dodge status with dual fans. each fan is using its own relay and circuit breaker. the first time i hooked everything up i had circuit breakers mounted to fan shroud. fans would come on but not for long. they acted like they were getting power intermitted. ok i thought, maybe there overheating since there real close to radiator, even though directions say to mount everything close to what your powering, and relays were hot to the touch, but not the wiring (10 gauge for battery or +, 12 gauge for purple/ fan power, 14 gauge for yellow/ignition wire and grounds from fans..this is how summits dual fan relay is set-up) i moved the circuit breakers to the radiator support, and mounted about 6 inches from closest part of radiator. relays are mounted on inner fender a good foot from radiator. now neither circuit breakers or relays get hot but same thing is happening. if i cross over the "battery" and "aux" terminals on circuit breakers breifly fans work like there sopose to. checking amperage at circuit breakers when t-stat will turn fans on i get 14.2 amps and 12.1 amps on each fan with no spike. i have not checked amperage at fan (got to dark and mosquitoes love me for some reason). thats first thing on the agenda in the morning. i'm thinking IF i don't have a high amperage pull on fans and IF there is no spike at start-up, i have two bad circuit breakers. now if the circuit breakers are the culprit, can i just eliminate them all together. i do understand why they are there, but if i read correctly in the lastest issue of MM and FF they pieced together a similair system and i don't remember them using a circuit breaker. they used a dual fan with one relay and stated they had no problems. i'm using two relays with a dual fan set-up. let me tell you, when they are working they move A LOT of air and cool suburban down quickly, that is until circuit breakers give up. i'll tell you this much, i bought a HUGE aluminum radiator for a 454 suburban, and just idling without fans temp gauges goes no higher than 200 degress. let me know what you think. rick.

06-09-2009, 02:32 AM	#1
rick lester Member Join Date: Oct 2004 Location: Littlestown PA Posts: 163 Likes: 9 Liked 4 Times in 1 Post	electric fans relay question. i just hooked up electric fans using a summit kit. fans are from a dodge status with dual fans. each fan is using its own relay and circuit breaker. the first time i hooked everything up i had circuit breakers mounted to fan shroud. fans would come on but not for long. they acted like they were getting power intermitted. ok i thought, maybe there overheating since there real close to radiator, even though directions say to mount everything close to what your powering, and relays were hot to the touch, but not the wiring (10 gauge for battery or +, 12 gauge for purple/ fan power, 14 gauge for yellow/ignition wire and grounds from fans..this is how summits dual fan relay is set-up) i moved the circuit breakers to the radiator support, and mounted about 6 inches from closest part of radiator. relays are mounted on inner fender a good foot from radiator. now neither circuit breakers or relays get hot but same thing is happening. if i cross over the "battery" and "aux" terminals on circuit breakers breifly fans work like there sopose to. checking amperage at circuit breakers when t-stat will turn fans on i get 14.2 amps and 12.1 amps on each fan with no spike. i have not checked amperage at fan (got to dark and mosquitoes love me for some reason). thats first thing on the agenda in the morning. i'm thinking IF i don't have a high amperage pull on fans and IF there is no spike at start-up, i have two bad circuit breakers. now if the circuit breakers are the culprit, can i just eliminate them all together. i do understand why they are there, but if i read correctly in the lastest issue of MM and FF they pieced together a similair system and i don't remember them using a circuit breaker. they used a dual fan with one relay and stated they had no problems. i'm using two relays with a dual fan set-up. let me tell you, when they are working they move A LOT of air and cool suburban down quickly, that is until circuit breakers give up. i'll tell you this much, i bought a HUGE aluminum radiator for a 454 suburban, and just idling without fans temp gauges goes no higher than 200 degress. let me know what you think. rick.