Hi, I have a car project that i have been working on for the past 4 years and i have a small electrical dilemma, i have been recommended this forum by a fellow car hobbyist on another forum and i hope you can help me ![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Basically i have 4 fairly large 12v fans that need to operate constantly whilst the engine is running. Two control flow through the engine bay and the other two control flow over an intercooler system. Now the problem i have is i have these fans wired into the ignition via a relay which means they will spool up as soon as the ignition is live. This draws a lot of current and the car experiences a massive voltage drop when cranking the engine.
What i would like is a Delay-Relay circuit of some sort that will delay the switching 'On' of the fans for a few seconds while i start the car. So basically when i turn on the ignition, i get 15 seconds or so to allow the fuel pump to prime and be able to start the car before the fans kick in.
Now i must let you all know, my understanding of electronics is good although my knowledge is not that vast so therefore if this is a complicated circuit, i may need a little bit of extra explaining on how it works.
Hope someone can help!
Thanks
Ryan
Basically i have 4 fairly large 12v fans that need to operate constantly whilst the engine is running. Two control flow through the engine bay and the other two control flow over an intercooler system. Now the problem i have is i have these fans wired into the ignition via a relay which means they will spool up as soon as the ignition is live. This draws a lot of current and the car experiences a massive voltage drop when cranking the engine.
What i would like is a Delay-Relay circuit of some sort that will delay the switching 'On' of the fans for a few seconds while i start the car. So basically when i turn on the ignition, i get 15 seconds or so to allow the fuel pump to prime and be able to start the car before the fans kick in.
Now i must let you all know, my understanding of electronics is good although my knowledge is not that vast so therefore if this is a complicated circuit, i may need a little bit of extra explaining on how it works.
Hope someone can help!
Thanks
Ryan