need4speed Posted July 24, 2013 Share Posted July 24, 2013 Im in the middle of wiring up my MS. I have heard that i can use MS to control my cooling fans and was wondering what i need to do (what additional wires go where etc) in order to do this? Im at the stage where any additional wires ideally need to be run now.. Thanks in advance Phil Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 25, 2013 Share Posted July 25, 2013 Has your ECU got the extra circuitry to control fans? If not, you'll need to add it, which means you'll need to be competent with a soldering iron. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 25, 2013 Share Posted July 25, 2013 It is very simple though, a transistor, diode and a couple of resistors IIRC. Once done, it grounds an output when the fan should switch on -use this to control the fan relay. Some info here: http://www.diyautotune.com/tech_articles/common_megasquirt_modifications.htm The rest is done in software settings. So basically, run a wire that when grounded switches the fans on, this is the only additional external wiring you will need. Quote Link to comment Share on other sites More sharing options...
need4speed Posted July 25, 2013 Author Share Posted July 25, 2013 Thanks for the responses. Tbh im not sure if my board has the required circuitry already. Its a pre-built ECU purchased from Nige a while back. I could contact him and find out Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 25, 2013 Share Posted July 25, 2013 If it's from Nige it would likely say on it if there's extra features. Quote Link to comment Share on other sites More sharing options...
need4speed Posted July 25, 2013 Author Share Posted July 25, 2013 Say on where, the ECU housing somewhere? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 25, 2013 Share Posted July 25, 2013 Yes, usually a sticker on it explaining what's connected to where. If you didn't specifically ask for extra features then 99% sure it won't have extra features. Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted July 25, 2013 Share Posted July 25, 2013 Mine has this On it, Quote Link to comment Share on other sites More sharing options...
need4speed Posted July 25, 2013 Author Share Posted July 25, 2013 Bugger. I dont have anything like that Quote Link to comment Share on other sites More sharing options...
Rob_B Posted July 25, 2013 Share Posted July 25, 2013 Edit: never mind. What I wrote was posted already. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.