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So today I finally got my oil pressure switch and as predicted it solved all the problems. The Oil pressure and STOP light are working correctly now. The next project is fixing the heater.

Okay, so today, with the truck running, I disconnected one of the wires of the oil pressure switch and as you said, the alternator started charging the batteries. It jumped up to 28V for the first time. The STOP and oil lights were also gone. So I need to buy a new Oil pressure switch Thank...

So in theory, if I start the truck normally and then after it starts running I disconnect one of the wires from the oil pressure switch, the truck should run normally and the oil pressure light and STOP light should turn off, the alternator should also start working until I turn off the engine...

To answer your questions: With the white wires connected to the pressure switch, you are getting oil and stop lights when you turn on the main switch? Yes, the truck starts normally however the STOP and oil pressure lights stay on. (I have a 0.65 volts across the white wires) When you start...

I have disconnected the white wires after the truck started and that removed both the oil light and the STOP light however that also removed all the other lights on the dash as far as I remember, So you want me to try and start the truck by connecting the white wires together? Did I understand...

The outside temp was about 80F. I have never ran the car for more than 10-15 min so it has never gotten to higher temperatures. I have always been worried about the red STOP light and didn't to ruin the engine.

Hi guys. So here is a problem I haven't been able to fix. The oil pressure reads very high. When I Unplug the engine oil pressure sensor, the gauge reads zero. when i disconnect any of the wires for the sensor next to the oil pressure gauge (white wires), the truck would not start. see the...

Got it, Thank you!

Okay boys we did it. It now starts right up. As Ronmar said the problem was from the VIM control. I had 6 relays in there 5 of which were 24 volt and one that was 12 volt. when I changed that to a 24 volt the problem was resolved. I want to take this opportunity to thank everyone for helping...

So I spend the entire day trying to see how to start this from the inside. This is what I figured out. when master switch is on, the red start engine button has about 0.7-0.85Volts going through it. Not sure what it is suppose to be. So here is what I think is happening. The oil pressure...

Does anyone know where these go? TL501 and TL502 cables. They are on the passenger side

Any ideas about what's wrong with the CTIS pressure control unit? should I buy a new one?

I finally got to drive it!!!!!! I wanted to take a moment to thank all of you especially @Ronmar for helping me get this far. I opened the 3 Valves of CTIS pressure control unit and the smaller one had dirt and mud stuck in there. Cleaned it up and put it all back together and the jiggling...

I have 40PSI for oil. The one weird thing that I've noticed is, when transmission controller is plugged in my rear tire pressure shoots up to over120, you know what the car is turn off and it stays there as if it's not working at all correctly. But when unplug transmission controller, the...

So what do you suggest I do??

Still haven't been able to start the car from the inside however when I manually start the car from the starter, My oil light stays on. any idea why that might be? I have checked the engine and the Transmission oils and they are all filled to the correct dipstick specification. can it be because...

I don't have any voltage on 86 of relay K1. where is the neutral start relay in the VIM? And what does it mean if I have no voltage on Pin 86 of K1?

Does any one know where these cables go to? TL501 and TL502

Okay so here is what I have so far, I have 24V in CB21, the fuse is working correctly as well, however I have nothing in pin 86 of the starter relay (K1) I have changed every single relay of the (neutral start contacts in the vehicle interface module(black plastic box under passenger dash)...

Here are some more pictures of the front of the car. Are these not correct? I think I will be better-off buying new ones for the front as these look old. any recommendation on where to buy some new ones?