devan1811 Posted August 16, 2017 Report Share Posted August 16, 2017 Monday I went to WGT Auto developments for abit of base mapping and everything was great, the only things I need to change is my cooling fan which is run off manual switch at the moment, but the tuner said to wire it directly into the ECU (it has the standard cooling switch).And the other thing is the fuel pump, again I have got it on a flick switch but I need it to go into the ECU, positive wire I presume? can someone explain how to wire them into the ECU wiring on a 76pin (4-3-3-3) SR20DET, is it just through the standard wiring itself on the plug? Quote Link to comment Share on other sites More sharing options...
Simon Posted August 16, 2017 Report Share Posted August 16, 2017 (edited) ECU will switch ground to control both and they will require relays as the ECU can only switch 2Amps max.Fuel Pump is on pin 18 in a factory set up.Fan is on pin 19 Edited August 16, 2017 by Simon Quote Link to comment Share on other sites More sharing options...
devan1811 Posted September 4, 2017 Author Report Share Posted September 4, 2017 Is it just a standard 4 pin relay I use? iv got a Revo-tec switch that I wanted to use so when the cars hot but its not on you can keep the fan running? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 4, 2017 Report Share Posted September 4, 2017 Yes basic 4 or 5 pin relay nothing fancy. Quote Link to comment Share on other sites More sharing options...
devan1811 Posted September 5, 2017 Author Report Share Posted September 5, 2017 just want to make sure this is correct before doing something drastically wrong, wiring is not my strongest point... does this look correct? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 5, 2017 Report Share Posted September 5, 2017 Yep that is spot on Quote Link to comment Share on other sites More sharing options...
devan1811 Posted September 6, 2017 Author Report Share Posted September 6, 2017 Yep that is spot onthank you mate Quote Link to comment Share on other sites More sharing options...
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