WIRING help needed for gen 1-carb'd Chevy 350

[81Chero]

First off, didn't want to jack someones thread. And didn't want to get goofy answers like on some of the 'other' forums.

And did a 'search' that mostly comes up talking points rather than actual pin-outs and or CLEAR, well lit pictures.

 

It's a '93 2dr XJ. 2wd 4cy/5spd, 8.25

Ordered Novak mounts and 'test fit' the 350. But AFTER getting the mounts, the instructions say that you can delete most all the wiring including the engine/ECU. I would've thought that one could run a piggy back kind of harness integrated to stock Jeep harness.

I've looked through Novak's site and the only wiring info I see is for the Gen 2+ (to purcha$) NOTHING as to getting gauges to read correctly and adapting air conditioning..

I'm wanting to use the mid-90's serpentine drive system that I already have. And Yes, I know how to get a chevy running with an HEI. Simple stuff. And have done it many times past. But wanting to make a nice little sleeper Jeep that's not all cobbled together causing electrical gremlins down the road. Like most, I dislike wiring and over 50+yrs have learned to either pay or just get the bare minimum to run.

But want it reliable enough to sell and not worry. Oh, and swapping in a chevy TBI fuel pump and just use a return style regulator like I did on my 

'95 Chevy 2500HD. EASY PEASY!!

 

I'm SURE that someone here has swapped a Chevy V8 here, but was hoping still has the wiring schematic that didn't get held hostage by Photobucket or the like..

Please help. Would really like to get this running in the next few weeks. 

Thanks

[Jeep Driver]

8 hours ago, 81Chero said:

I would've thought that one could run a piggy back kind of harness integrated to stock Jeep harness.

Yes and no. 

 

Starter is going to be wired exactly as the 2.5 is, nothing changes there. 

 

All you need is an ignition wire to run to your control box or coil...........that exists already. Or you can use it to trigger a new relay controlled circuit. You have a red wire which connects to an existing fused link, that red wire runs to the firewall near the blower, it's used for the retractable hood mounted light which likely no longer exists or never did exist. It's an always hot red wire with a single prong connecter, easy enough to find. It's fused, you can use this wire to supply 12+ to your new ignition relay. 

 

Your gauges have nothing to do with the ecu. 

 

Your tach wire already exists, trace it to the existing coil. 

 

Oil and temp wires should be easy enough to locate, attach to new senders or reuse existing senders. 

 

ECU serves no purpose. There is nothing for you to piggyback.

 

The only thing the ECU would do......and not in your case now.....is to turn on the fuel pump. You'll need to wire the neg wire at the fuel pump relay to ground and then run the red wire to the ignition circuit. Your existing 2.5 pump will work perfectly with your carb......regulated of course. 

 

Somewhere here is a wire schematic for the '88. Someone will point to it. 

You should have labeled your wires as you disconnected everything.  

 

See jeepair.com for your AC needs. 

[81Chero]

THANK YOU! I'd 'almost' give you a hug!

I thought in '93 they  changed the cluster to its own "system"? And thought the ECU needed to see oil pressure to energize the fuel pump.(?)

 

I just unplugged the harness. So shouldn't have anything that was cut or not there.

Waiting on blasting the serpentine brackets to get blasted, and painted. So I'll have a bit more room to pull wires around.

Thanks again.