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Alright electrical-gurus, I need some help trying to figure something out in my truck. To preface this, my 923 has an industrial lift-gate installed on the back of the bed. It has been working (has worked) in the past until I removed the aux-battery from the aft-tool-box (to install tooling in...

I promise I tried searching for this but there's like a million+ threads and I can't figure out which one is applicable, so apologies in advance if I'm asking a question that's been answered multiple times. Sitting at an extended red-light, I noticed my secondary air gauge was going down little...

I have a problem with my Tach, both the RPM indication *and* the Hobbs Meter don't work. Looking in the TM I see that there is a "Tachometer Pulse Sensor" that is right behind the gauge. Does that drive both functions of "RPM" and "Engine Hours"? I'm trying to best troubleshoot the parts before...

Hello and Good Day Gents, Just to preface this, I am in the TM (9-2320-272-24-1 section 3-150 “Coolant System Maintenance” so I have the Technical portion of the process in-hand. However, I have a few questions regarding the coolant system and am requesting some advice / wisdom from those who...

Hello and Good Day Gents, I need to replace both of my steering tires (Michelin 14.00R20 XZL) due to dry rot, had to install my spare tire on the drivers-side due to a small air-leak I noticed while out. The spare is also leaking too (Goodyear 14.00R20 Unisteel) so I need at least 2 (possibly 3...

Hello and Good Day Friends, I've been looking for a while and finally pulled the trigger and purchased a 1990 BMY M923A2, I have a bunch of questions about it lol. Mainly, looking to see what I should be doing as preventative-maintenance as the previous maintenance is not known (engine oil +...