Power for ECU

[esenior]

I'm wiring up my FAST ECU and want to know how others wired it to power. The FAST harness comes with a long set of leads to get power and negative directly from the battery. My problem is that I don't have much more room to run wiring and wanted to know if it was ok to pull power from a junction point under my dash (is fed from a 4AWG cable directly to the battery) and if I can get ground from the body (putting lots of ground straps in place). Am I going to have problems if I try to do this?

[dhutton]

ECU's need clean power. Try to run it directly to the battery with the supplied harness.

[esenior]

Ack...not the answer I wanted to hear, but you guys here have never steered me wrong. was able to squeeze the ground and power lines in with some other wires, but if I need to install 1 more wire, I'm screwed.

Thanks for the advice Don

---Eric

[TT302Z28]

Glad the hear you are going to run it off the battery! Computers ability to "think" accurately is dependent on how clean it's voltage and current supply are. The further away from the battery you get the less conditioned the power is and the more succeptable to power not being stable. A good example is your dash lights dimming when your high powered stereo gets turned up and you source amp power from the

[TT302Z28]

Glad the hear you are going to run it off the battery! Computers ability to "think" accurately is dependent on how clean it's voltage and current supply are. The further away from the battery you get the less conditioned the power is and the more succeptable to power not being stable. A good example is your dash lights dimming when your high powered stereo gets turned up and you source amp power from the fuse block.