Project Genisis Lo Budget 3800SC (Page 14/42)
hercimer01 AUG 21, 05:54 PM
Think I can Git Er Done by Sept.11 FieroRama?
hercimer01 AUG 25, 03:55 AM
I found a computer holder from a 2002 S-10. I cut off the mounting tabs and just screwed it through into the existing tinerman clips.


I mounted it so the plugs are facing down like the old one.


The cooling fins will have to be trimmed a bit.Edit: I cut the back of the console out instead.

[This message has been edited by hercimer01 (edited 08-26-2011).]

hercimer01 AUG 26, 07:47 AM
Well i have the PCM wired up and the C203 connector done except for the VSS. I ran the green wire from C1-55 down by the C203 to interface through the diode and cap. It gets hooked to G On C203. What gets done with C203 H?

I still have the C500 left to hook up.
phonedawgz AUG 26, 07:57 AM
C203 H - VSS signal from the speedometer to the ECM - not used on a 3800

[This message has been edited by phonedawgz (edited 08-26-2011).]

hercimer01 AUG 26, 07:20 PM
Thanks phonedawgs! Do you know where C203-H comes out behind the dash? I would like to use it for the Perf Shift wire.

I decided it would just be easier to cut the back of the console out. Maybe it will help keep it cooler too. I removed the steel rod from the mounting tray also. The tray holds the computer just fine with out it. The green tape is only temporary holding the bundles together. I will dress the wire harness after im done wiring.

[This message has been edited by hercimer01 (edited 08-26-2011).]

hercimer01 AUG 26, 07:51 PM
I have the oil pressure center pin wire connected to the gauge C203-E. where do the other two wires Go? (pressure switch wires) One to the Eng Block Gnd and the other to the Fuel Pump relay? Does the pressure sender need voltage to work?

[This message has been edited by hercimer01 (edited 08-26-2011).]

phonedawgz AUG 26, 09:03 PM
The two outside wires - one Orange/Black and one Tan/White hook up to C203 B, and C203 L.

Yes those two wires also run to the fuel pump relay.
hercimer01 AUG 27, 02:57 AM
This is how I wired my fuel pump relay. C203 B and L doesn't make any sense.



Could you Edit maybe with "paint" or explain?

[This message has been edited by hercimer01 (edited 08-27-2011).]

hercimer01 AUG 27, 03:51 AM
It Closes with oil pressure to keep the fuel pump running? Does the Fuel pump control line shut down at some point?

[This message has been edited by hercimer01 (edited 08-27-2011).]

phonedawgz AUG 27, 05:09 AM
Yep - wired like that.

Nope - both switches (oil pressure and ECM controlled relay) normally stay on during the entire time the engine is running.