Installed new wiring harness on my '93 R1. Car started up fine and ran smooth for 30 minutes. Then all of the sudden, it just stalled and died. Now, I have the check engine light on and the commander on my PowerFC does not illuminate. WTF?

Checked fuses and they all appear to be fine. Will start checking relays (oh yay, lotsa fun .. ). I noticed that there's a black pin connector (ECU end) on the new harness that has nowhere to go. Is this the mystery black box (factory recall) that '93s are supposed to have? Need some expertise advice here .... really stuck.

 

Okay. Narrowed down some of the problems. The EGI fuse keeps popping once the car gets warmed up. Does this sound familiar to anyone?

 

Which harness specifically did you replace?

 

The engine harness.

I believe the black pin connector is for cruise control, which I don't have. So, I'm not worried about that. I can't figure out how I'm drawing over 30 amps through the EGI relay. All the grounds are connected properly. And it only pops the fuse under high load, after the engine is warmed up.

 

Probably a stupid idea, but would putting in a bigger fuse do any good? 40A, 60A?

 

Crap man, I have no real place to tell you to look. I most certainly would not up the fuse value.

You have access to an inductive amp meter? Those are the "clamp on" kind that you just put around the wire without piercing it. You could use that to narrow it down to which circuit is pulling all the current.

Do you have the schematics? I can check and see in mine what all actually pulls through the EGI fuse.

 

Nope and nope. I have all but given up on locating the current draw. I've asked a couple guys to check out their schematics for which circuits to check; but I've gotten no response, as of yet.

The car's is driveable without any high load. I guess it's time to cough up the cash for tuner expertise ....