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Alright... Charged both batteries and took them in. Turns out they're both good. One rated at 800 CCA measured 898 CCA, 13.01 volts at 61 degrees. The other, rated at 850 CCA, measured 1136 CCA, 13.75 volts at 71 degrees. Got 12.2 volts at my pink/black wire, and also heard the IP click...

The glow plugs all read around 1.2 ohms. That fried black wire was screwed into the firewall and connected to a bolt on the engine where another 4 or 6 gauge negative wire coming from the terminal board was also connected. I'm not sure where the engine ground wire is, but I was hoping that was...

Sorry, I didn't mean that I "grounded" the pink/black wire...I meant I had the positive of my meter on the pink/black and the black of my meter to a ground. Is there a way I could be frying these batteries so soon? Lately my gen 2 light comes on and off as I let of the gas, but tightening the...

So the pink/black wire is getting 11.98 volts. Batteries together measured 24.5 and alone they were good. Don't have a min/max feature on my meter, and I haven't had a chance to bring them in. Was I supposed to take the green wire off the injector while the pink/black wire was grounded or...

Alright, so I don't really know where to go from here, so I plan on doing the resistor bypass to the front battery with a 120 amp mega fuse, and 8 ga wire (cuz why not right?). Then I'll give it another multimeter test. Anyone have any opinions about my temp switch not having the optimal 800...

Okay, it went back to 24 volts. Didn't have to give it a whack either. Maybe I metered wrong the first time.

Again, many thanks yall. So, I will want to do another resistance test or actually remove each plug to check for swelling/damage?

So I measured the voltage between main gp relay terminals (one prong on orange lead, and one on red lead) and it was around 24 volts with the car off and cold. I'm assuming I was supposed to do this with the controller card in? After I turned the ignition to "run" it went to 0 volts. Then...

So I measured the voltage between main gp relay terminals (one prong on orange lead, and one on red lead) and it was around 24 volts with the car off and cold. I'm assuming I was supposed to do this with the controller card in? After I turned the ignition to "run" it went to 0 volts. Then...

24.8 volts :???:

Thanks for all the help yall. So, I'm pretty confident I've tested this correctly with my multimeter. I've attached a picture of the TM's testing procedure with the results I'm getting in red. The GP relay test seems to be good, though. (there is no voltage getting to the orange lead on...

In the TM instructions for testing all the module wires it only tells you to disconnect pink injector pump wire and pull out the controller card...nothing about disconnecting batteries. Here's what I'm getting as of now: Purple/white: 7 volts light blue: gp relay does energize dark blue...

So for the resistance am I connecting the red lead to the module terminal/wire and the black lead to the ground? If I'm getting readings that aren't correct should I get a new card or move to a different area? From the TM is sounds like module is the first place to start/replace. My main issue...

Thanks much ALECS!

Hey guys, I feel like I've done enough searching so I'm just gonna ask... There are a few simple voltimeter actions listed in the instructions for testing the GPM that I don't grasp 100%. Does anyone mind elaborating on phrases like "Approximately 12.0 volts at wire","jump wire to...