I'm probably going to pull the front clip on the part truck this weekend, which has a 5.8 gasser. It sure would've been easier to just swap the whole clips. But improvise, adapt and overcome.
I'm planning to change the interior in the diesel to almost anything but the awful late 80s early 90s bright red. I'll take a look at the gauge cluster when I pull the dash.
I was hoping to be able to use the gasser dash harness and add the diesel and 4whl specific stuff. But it seems like that really not possible without replacing someone else's sketchy wiring with sketchy wiring of my own. I want to run as close to stock a harness as possible. Well except for a push button glow plug and starter button.
Can anyone suggest a link with easiest way to do this, with keeping most of the high voltage out of the cab?
I don't see why you can't use the 5.8 gasser harness, especially since you are using a pushbutton glowplug system. You said its a 89, so I am assuming it's fuel injected.
On the fuel injected trucks, the ignition coil was fed by a white/lightblue wire. This comes from a fusible link, and then a red/lightgreen which leads to the ignition switch. You can use this white/lightblue wire as your ignition hot for all the stuff the diesel needs on top of the engine. This will be the IP, the glowplug controller mounted on back of the diesel, the high idle temp switch which feeds the high idle solenoid, and the brake warning switch. There may be a couple of things I missed, but they are all fed by this one wire on the diesel trucks.
You will have to do some wiring for the dual batteries. You will probably need to re-arrange some stuff under the hood to fit the two batteries, and then you will need to run the large wires to connect the two batteries, and both grounds on either side of the block. Then the large wire feeds down to the diesel starter.
A smaller(about 4 or 6 gauge) wire is attached to the battery + on the pass side battery, and then can be run over to the gasser starter solenoid. On the other side of the gasser solenoid, the large terminal will have a smaller wire going down to the diesel solenoid on the diesel starter. The gasser original start wire can stay on the gasser solenoid.
Where the 4 or 6 guage wire hooks to the gasser solenoid, you can run another 4 or 6 guage, or you can run two 10 gauge side by side like the factory did, and these run over and feed your glowplug controller.
Run your manual glowplug switch inside the cab.
Did I forget anything? I am assuming you are going to swap trannies also, so you will need to sort out your red/blue start wires underneath the brake booster area, since the original gasser if it had a automatic, would have a neutral safety switch on the side of the auto trans. With that gone you will not have a complete circuit to the gasser solenoid for start. But this is a common thing when doing any trans swapping.
