Recent content by FLynes

Turns out you were right, the black alternator wire is indeed 8ga. I just measured it and the outer diameter is 0.213"

Good to know I can follow what you guys have been saying and learn from it. You could very well be correct. The Service Manual is very sporadic about the MB300 chassis cab...it was primarily written for the regular B-vans. Since it makes no mention of the 100A voltage regulator that's in my...

If I ran a 8ga. wire, along with a 12 gauge fusible link, from my alternator output stud to my starter relay stud, this should make bypassing the bulkhead connector no longer necessary, right? If I've correctly understood everything you guys have schooled me on, since electricity follows the...

Correct. Yes, the alternator charges the chassis cab battery and a wire runs from the chassis cab battery to the 12v switched battery isolator solenoid, which allows the coach/house batteries to be charged, but only when the engine is running. Everything in the coach uses 12V, water pump...

Point taken, thanks. I can't wait to start taking long trips with it. BTW, where are you at in Idaho? I'm in Nampa. Click For Full-Size Image.

When I started taking the motorhome apart two years ago, I made sure to keep all of the parts I took off. When I reinstalled the engine, I converted over to a dual pulley setup, because I used a Mopar A/C compressor from a 1983 B150. I also took the alternator and the rest of the dual pulleys...

I'm retired, so I'm always interested in reading articles/posts that will increase my knowledge, provided the info is accurate. Sometimes I feel like a monkey doing math in Greek, when I read technical articles (especially when it comes to electrical...I can read a schematic, thanks to my Dad...

Yep, and the guy who takes credit for inventing that TFI conversion goes by the screen name of JeepHammer. Very long-winded guy. His heart is in the right place, but his info is just outdated and some of it is dead wrong.

That isolator is a solenoid....its official name is "Battery Isolator Solenoid". The only thing I don't know is what amp rating my isolator solenoid is. I think it's 90A but I wouldn't bet a nut on it. And you are correct, the solenoid is, for lack of a better word, "dumb". With 12V switched...

Yeah, I tend to think outloud, to make sure I'm on the right track. The Chassis Cab does indeed have an isolator....it's in one of the pics I posted. I tend to keep what the original engineers designed....I still run the original Prestolite ignition system on my CJ-5 and have had ZERO issues. If...

I can, but only to a certain degree. Unfortunately, the MB300 is often overlooked in the Mopar Service Manual....the '74-'77 Parts Catalog is a better, but the people selling them online are very proud of them. But having the correct Voltage Regulator matched to the alternator does play into...

Quick addendum....my Service Manual only lists regulator P/N 3438150...mine is 3755850 (no mention of it in the Service Manual), with a date code of 235 (2-6JUN75), so I know it's the original. My regulator, when I Googled it, is for 100 Amp alternators, so apparently the Warren Plant built...

And it would make perfect sense to keep the ammeter but for one thing....since it is a motorhome, I do want to upgrade the alternator. There were four alternators available on the B-Vans, 41 Amp. (Red Tag), 50 Amp. (Green Tag) and two different 60 Amp. (Blue & Natural Tags)....no idea what the...

Yep, my fusible link going to the bulkhead connector from the battery looks like yours, except that it's red. Yeah, it does. Accidentally grounding the circuit activates the electrical flow, much like when my dumbass German Shepherd bites the garden hose and water starts pissing out of the...

Nope, it's just two wires with a connector. No idea why they have it like that, but the factory must have had a reason. I think I'm misunderstanding you. How can it be hot but have no flow. What I understand as "hot" means that, when you put a test light on it, it lights up or, when you put a...