we just towed it home so its in my garage now.

__________________
my name is rachelle and i have aquired a '75 240D. i received the car shortly after my grandfather's passing away. it was one of many of his mercedes. it has been a great car, and has taught me a ton.

never take life too seriously...

Nice long conversation with your boy friend.
Simple circuit is the most logical answer, with your current funding.
Attached is a graphic of the circuit we discussed.

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75,

You mechanic doesn't what he it talking about. Parallel GP will work with or without a relay if both ways are wired correctly. I know this to be true because I replaced the series GP in a '64 190D with parallel GP 20 years ago and it worked great. Less time required waiting for GP to heat and engine started quicker. I made adapter bushings from loop style GP so parallel GP could be used in the 190D engine.

Its true the parallel GP were not made for the 240D engine but that doesn't mean that they can't be adapted to it. U can also control how long you have the Parallel GP energized by how long U pull out the "gorilla knob".

The relay was added to update the old obsolete "gorilla knob" with a modern system where you only had to turn a key to start and stop the engine.

Since the GP are in parallel, it doesn't matter which one U connect the emergency jumper wire to. Use easiest one to get at.

Yes 10 gage wire would work better if it fits in the terminals.

I don't understand what U mean by U replaced the resistor with a light bulb.

You can contact me at MrP8888 on Yahoo messenger.

P E H

thanks you SOOOOO much for your help. both my bf and i now understand a lot more about the gp system, and how it works. we are going out tomorrow to buy what we need to do the job. i really appriciate the time and effort. we will let you know how it goes.

P.E.H. i am glad to know that you did that on one of your old diesels. we are going to do what whunter told us to do today over the phone. he helped a ton. i will also tell my boyfriend about the 10 agw. i will see if it fits... all the help we can get with that system is appriciated. thanks!!!!

ra

__________________
my name is rachelle and i have aquired a '75 240D. i received the car shortly after my grandfather's passing away. it was one of many of his mercedes. it has been a great car, and has taught me a ton.

never take life too seriously...

If you will go ahead and install the ENTIRE fastglow kit correctly, you will be thrilled with the way it works and the car starts.
Anything less and you should put the loop type glow plugs back in.
There is no way to know what the system is supposed to be doing with half one type and half another.
The other thing that makes a world of difference with the 115 240 is making sure you have the biggest and best battery that will fit the tray, a weak battery will make trouble shooting very confusing.

I had not read the last conversation with whunter when I wrote this so carry on.

__________________
Ncnetman
1978 300cd fresh paint
1965 Mustang
1968 Torino GT fastback
2015 VW Passat TDI
1969 Ranchero- project
1974 240d 4-speed -for sale
1976 240d - for sale
1990 6.2 Suburban 194k-getting a 6.5 turbo
2008 Duramax Silverado-totaled
1959 Chev 3100 Fleetside - sold

75,

Hunter gives good advice.

BTW, the GP I converted the old 190D to were the ones made for the 617 engine. They weren't the special ones with large diameter threads like the ones I think U have. Anyway, they still worked great.

P E H

Hey Hunter this is BF and I was wondering where to get a 80 amp switch because Radio shack, Kendall Electronic Inc., Napa, and some others all have never even heard of an 80 amp switch. I think i'll start to ask for the Single Poll Switch maybe that has better luck. also I was looking at the diagram that you sent and was wondering why you had the ground wire connected to the pluggs. if it needs the ground wire i'll put it on but does it connect the battery directly or jus grond it like the old system? I thought that these plugs didn't work with the ground wire. please explain because i thought you said to just put a thicker grond wire on the battery for the starter?

BF (Kaleb)

Ps: diesels are so much fun to work on
Pss: those plug really get hot.

__________________
my name is rachelle and i have aquired a '75 240D. i received the car shortly after my grandfather's passing away. it was one of many of his mercedes. it has been a great car, and has taught me a ton.

never take life too seriously...

R. ;

You should be able to easily buy a momentary push buttom starter switch from any FLAPS , look in thier ' Buyer's Guide ' .

If no joy ping me off list (I don;t get here often) and I'll look it up in my NAPA Echlin book for you .


The ground wire shown is just a schematic , you're right the GP's ground through the cast iron cyclinder head .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Cheap answer on the switch, picture attached.
You will need a switch box, and cover plate to protect you from shorting or burns.
The switches are cheap enough to replace as needed = they are disposable.

The Ground in the graphic simulates the engine block ground, you do NOT need it.

I still suggest replacing the battery to body ground with a massive Zero gauge cable, it will make a large difference in cranking speed = easier starting.

Here is an alternative switch, mounting it would be interesting.
K) Eaton Heinemann 70 amp circuit breaker.
# AM1-Z774-8 AM1-B3A
Rated at up to 65 volts d.c.
UL Recognized.
Can be face mounted using 6-32 screws.
Time delay - 2
An excellent choice, due to their d.c. voltage rating, for use between
the photovoltaic modules and charge controller as well as between
the charge controller and battery(s) in either a 12 or 24 volt system.
Can also be used with some small inverters.
Easy to wire using the threaded lugs on the back.
These are a Special Purchase and are limited to stock on hand.
Currently we have 79 in stock.
PRICE: ( EH - 70 - 65V ) $ 2.50 each

http://www.solarseller.com/dc_circuit_breaker_breakers_rated_up_to_80_volts.htm

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75,

I don't agree with Hunter in using the switch he shows. You should use an intermittent switch so U don't forget to turn off the GP. If U don't use a relay, I would get a good MB GP switch, the one that is connected to the "gorilla" knob, and turn on the GP with that.

P E H

Perhaps a horn relay or other automotive relay would be able to switch that amount of current? Check around your local McParts place...

If I understand correctly, it's 80 amps 'inrush' for a moment, then it drops.

Good luck.

Another possibility is to wire in a relay. I did this on a '86 Olds I had once. Wired it up to a cheap Radio Shack momentary push button and worked very well.

__________________
1977 300D Lost coolant while someone else was driving
1983 300D Can't run without oil
1985 300SD (gone but not forgotten)
1990 300TE 4matic Sold
1991 Yamaha Venture
1975 Kawsaki 250 triple
1974 Honda 200CL
1951 8N Ford
2008 Wildfire 650C

You have a PM on this issue.

I would also recommend using a momentary switch...not one that you can accidentally leave on for too long.

Home wiring switches are a NONO...make sure you get a 80amp DC rated switch...AC ratings are different..

If you guys can't find one....I'll send you a 100amp momentary pushbutton switch out of my junk box. All ya gotta do is ask

I suggest you accept "Brandon314159"s offer.
I don't have a source local to you for a switch like this.