1998 4.3 wiring scematic

[dsmmace]

I am looking for a tapping into a 'key switched 12v wire' and 'rpm signal' in the engine bay.

Just looking to confirm, but can I use the power signal (purple - location 9) from ignition control module for the 'key switched signal' and the tach signal wire (grey - location 11) wire off the module for rpm signal?

 

[Don S]

Re: 1998 4.3 wiring scematic

What and where are you trying to tap in?

 

[dsmmace]

Re: 1998 4.3 wiring scematic

*flame suit on*

http://www.fuelairspark.com/ezefi/default.asp

 

[Don S]

Re: 1998 4.3 wiring scematic

Might want to post your engine serial number, just to make sure this is the right manual
http://www.4shared.com/document/7EeCcTcn/Service_Manual_23.html
There is wiring diagrams that shows the wiring in the engine compartment, which is where you are going to need to access power.

 

[Bt Doctur]

Re: 1998 4.3 wiring scematic

Except for the fact you dont have O2 sensors ,it`s a waste of money

 

[dsmmace]

Re: 1998 4.3 wiring scematic

I have spacer plates that I bought off ebay to allow the usage of an oxygen sensor inbetween the two piece manifolds.
Here's the guy I bought them off of for future reference: http://myworld.ebay.com/ebaymotors/hotprowl/?_trksid=p4340.l2559

The only serial number I have is 0L047164.

I really hope it works. I only have those two wires left to hook up and I can attempt to fire it up.

 

[Don S]

Re: 1998 4.3 wiring scematic

ThaT is the correct manual.

PS: Just an FYI, That unit is not marine rated, and can be a fire/explosion hazard.

 

[dsmmace]

Re: 1998 4.3 wiring scematic

Isn't manual # 25 the one I need for my 4.3L?

Yes I realize that I am taking a risk and also why I put my *flamesuit* on. However with using marine fuel lines routed like a EFI marine setup and using the factory wiring for the fuel pump operation, I think I am being *smart* about it.

That being said, am I looking at tapping into the correct wiring in the engine bay? Thanks for your time so far Don, you have always given "appropriate advice" that is worth listening too.

 

[Don S]

Re: 1998 4.3 wiring scematic

Yes, I gave you the wrong one, try this one.

http://www.4shared.com/document/dKAM4Vg8/Service_Manual_25.html

 

[dsmmace]

Re: 1998 4.3 wiring scematic

I will confirm that those two wires work well for tach signal and for switched key signal. And that it runs and idles nicely so far.

 

[dsmmace]

Re: 1998 4.3 wiring scematic

Sorry about the crappy audio, but you get the idea.