You can tell who is getting ready for a trip by all the posts right?
 

You can tell who is getting ready for a trip by all the posts right?

Started by RickB, June 12, 2015, 06:31:51 PM

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RickB

Another issue... I've had 28 volts at the gauge the last couple trips and as far as I can tell I blew out all my headlights due to over voltage. I have 28 volts to the headlight receptacles and they are all out. I know I had a new voltage regulator put in when I bought this but I have no idea where it is on an MCI and I don't think the type the mechanic put in is adjustable but just in case it is where the heck is the darn thing at???

In our old GMC it was on a bay wall but I have no clue where it is on my MCI 9.

Getting ready for a trip is like getting a full time job. Haven't even looked at the jakes yet... yikes.

RB
I will drive my Detroit hard... I will drive my Detroit hard.

gumpy

Right rear bay, back wall, just in front of the right duals.

BTW, have you checked your starting batteries for water?

Craig Shepard
Located in Minnesquito

http://bus.gumpydog.com - "Some Assembly Required"

RickB

Here's a weird twist... The headlights are GE 2A1 and 1A1 bulb which are 12 volt bulbs and I am reading 28 volts at the receptacle. What am I missing? Did someone wire these in series so I can use 12 volt bulbs?

RB


I will drive my Detroit hard... I will drive my Detroit hard.

gumpy

MC9 were wired in series from the factory. You should see 24v on the drivers side and 12v on the passenger side. There's a 12v wire in the middle of the series connection.
Ground on the passenger side.
Craig Shepard
Located in Minnesquito

http://bus.gumpydog.com - "Some Assembly Required"

scott332

Well I guess I finally found a big difference between an MC9 & an MC12.  On my 12 the headlights are12 volt but they get power by running off of the center of the batteries. A Vanner equalizer keeps the batteries charged correctly. The headlights have relays in the A/C junction box in the front left baggage compartment.
1992 MCI MC-12
1956 GMC PD4501-805

RickB

Gumpy when you say right side is where the voltage regulator is do you mean the passenger side. If so is it behind a cover up near the tunnel? If that's the case it's my lucky day because I would have to pull my inverter to get to that and by the looks of things I need to pull my inverter anyways. Lucky me.

Rick
I will drive my Detroit hard... I will drive my Detroit hard.

gumpy

Yes, that's it. Passenger side, rear bay, rear wall, near the tunnel behind a cover.

Craig Shepard
Located in Minnesquito

http://bus.gumpydog.com - "Some Assembly Required"