Forge Racing

Hey Daniel

blue/red wire the fuel punp relay just needs to goto a key switched power source . It will need to handle the fuel pump amperage, look for a big key switched wire.

Are you using the ZX or the 240Z fuse link box ? Either way there should be a bus on the + side. All of the fuse links have one side that goes to the + terminal of the battery and the others feed differend circuits.
What color wires do you have comming off the 240Z fuse links on the circuit side ? what do the feed ?

In a 280ZX
Black fusable link is 80 Amps and will feed will the Ignition relay and the accesories relay which feeds things like like body lighting, AC, radio

Red fusable link /might look brown is 50 Amps and will feed EFI Relay, Ignition/ fuel pump, some of fuse block.

Green fusable linis 40 Amps and will feed EFI Injectors.

There should be a heavy gauge starter wire also going from the + terminal of the battery to the starter.
" brown and green wires are to go to the (+) terminal on the Starter."
I think that the wires do not have to be physicaly run to the starter. but they will have the exact same electrical potential.

( did that make any since ?)

"And on the ignition harness connector, where do the 2 black wires go? " Do they have white lines on them ? are they on the turbo harness or on the 240Z ?

Other helpful diagram.

Problem summary:
http://www.okzcc.com/phpBB2/viewtopic.php?t=532
Found the electrical connection on the FPR. this is a fuel temp sensor. 280ZX's don't have this.

The spade connector was coroded and the connector was crimped on and loose.

Desided to replace this, and clean the male side on the sensor.

Put it all together and started it was still running very rough. So Chuck an I thought there must be a vacuum leak. So we did the take off the oil cap while the car was running, and the idle did not change.

Chuck found a bad vacuum line in the driverside front. We could not find any replacement line so Toni went to the parts store to get vacuum line and contact cleaner.

Remembered something I read about in one of my fuel injection books about unhooking the throtle position sensor and forcing it in to limp home mode. once I did this the car started to idle pretty good.

So I cleaned the throtle position sensor connector with contact cleaner. and while I was doing that I thought why not check the throtal posistion switch too. look its green thats not good. cleanes the TPS as well. pluged it all back together and started it. let it idle for a while then took it for a spirited test drive. looked like everthing was running fine but I could not get the boost over 0 PSI. took it back to lauries garage and found Mikes manual boost adjuster under the hood and turned it up a little. then took it for an even more spirited test drive. Apperently durring all of this testing I made Lauries neighbor unhappy (Waaaahh). So after all of that it is now purring like a kitten with warm milk.

Thank you to Chuck and Toni for all the help.