anybody know how to wire up the wires so that the cluster works. I got my motor mounted and but I'm just going to wire up a toggle switch for the glow plugs and a push button for the starter. but I was wondering if anyone knew how to wire up the alternator so it charges the battery properly?

 

Do you still have your PCM connected? The PCM regulates the alternator and runs the gauges. At the moment there isn't any way to make the gauges work without it (working on it), but the alternator can be ran with an external regulator from an 80's Dodge.

 

Yes I do have it still hooked up as far as I know. But I'm not sure which weird I need to spice or if there was maybe a one wire alternater that would work with the Mercedes bracket.

 

The crank sensor needs to be hooked up, and it needs a signal from the cam sensor at startup before the PCM will turn on the cluster or start charging.

The easiest way to accomplish this is to hook up the crank sensor, either in stock location or fabricate something if not available, then connect the cam sensor signal wire into the crank sensor. Yours should be like mine, and have 3 wires to each sensor. If so, each one has a power, ground, and signal wire returning to the PCM. The power and ground should be the same colors on both sensors, so just take the one that's different on the cam sensor, and tie it into the one that's different on the crank sensor. Make sure not to hook the power or ground in by mistake. A reman PCM is $300 IIRC...

 

If I do the Saab alternator upgrade do I still need the external regulator?

 

I'm not familiar with the Saab alternator. Is it internally regulated?

 

It is internally regulated, so no regulator required. On another note and sorry to hijack the thread, what do I do about all of the injector wires, the MAP sensor and the throttle position sensor, and the O2 sensors?

 

I just depinned mine, and removed those harnesses. Some share power and ground with other things, so you'll need to separate them at the junctions if you do that. Some things can be handy to keep though, like the manifold temp sensor. I have mine tapped into my charge tube after the intercooler, and access it via an OBD bluetooth adapter and the Android Torque Pro app.

 

Depinned, you mean at the PCM? I guess the bigger question is will the jeep run without those things being handled? Like maybe the wires just cut?

 

Yeah I was wondering. My plan was to set the glow plugs up on a toggle switch and then set starter up with a starter relay with a push button start. Then go to like auto zone and buy one of the three Guage pods that have oil pressure, coolant temp, and battery voltage. Then getting rid of almost all of the wires. But my only problem would be is how can I get the alternator to charge the battery?


Also if anyone is struggling with motor mounts I can upload a few pictures of mine. I wasn't able to find any images anywhere online so if anyone want to see let me know and I'll post them.