Hello, I recently changed out the old style glow plugs to the pencil ones and as a result the glow plug indicator light no longer lights up. Is there a way to make it work again with the new plugs?

This car has a sender unit with a ground connection that is supposed to connect to the last glow plug. As far as I know, there's no relay in this car as it has a pull starter, and the glow plug indicator light is not the saltshaker type. See pictures for illustration, thanks in advance

http://imgur.com/a/njnqT

what vehicle is that?

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407D

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Could you post chassis-Nr. or copy of the datacard, please?

It has preglow ind. lamp thus it have preglow relay also.

Chassis: 30911510327472

I was looking for the relay on the EPC program, couldn't find it. I also checked around in the engine compartment, but no relay there either. I think if there is one, it has to be under the dashboard.

Excuse me, you're right, this L 407 D has not preglow relay, but have preglow ind. lamp and 50 A fuse for glow plugs.

The "pencil-type" glowplugs won't work with your preglow system.
Electrical scheme for "wire-type" glow plugs (as on your L 407 D) is below.

It needs to install relay for "pencil-type" glowplugs from w123/201/124 or retrofit "fast-preglow" kit (p/n BOSCH 0 250 201 955).

Attached Thumbnails

 

Oh well then, I guess I will leave it as is. The glow plugs are getting power and are working fine, the engine starts incredibly fast. I've been using the interior lamp as an "indicator" (brightness weakens when glow plugs are powered), and just counting to 10 seconds. I was thinking there maybe was some hack way to make it work, hehe Thanks for your time anyway, and may I ask you where you found that wiring sheet?

L 407 D (box-type van, high, with 4 swivel doors & side door, 2.950 mm wheelbase)
Dealer: 555 - Norway
Paint: 7186 - pearl grey
Engine Nr. 616910 10 018935
Transmission Nr. 711100 10 035857
Steering: 760204 10
Body: 309504 10
Front axle: 730502 10 061369
Rear axle: 741001 10 551112
Wheels: Lemmerz
Lamps: Hella/Hella
SA-codes:
B30 - load-depending brake system
C30 - soft rear springs (5 leaf springs instead of 6 leaf ones) for total weight of 3.5 tons
F40 - laminated windshield, mnf. Sigla
F77 - engine compartment sound insulation
J10 - 12V tachograph, "120 km/h", 10/50
J50 - fuel reserve ind. lamp (12V, for 60 L tank)
J54 - brake fluid reservoir with contactor
K59 - exhaust muffler with encasing
T16 - side panel sliding door (loading door)
W91 - rocker panel to rear panel doors
X07 - registration as light truck (Førerkortklasse C1?)
X15 - reduction of total weight to 2.5 tons
X89 - engine quality test (?????)
Y61 -
Y68 -

I think if it work, it work incorrect.
But if engine starts fine, in early spring in Norway, I belive anything. Huh.

Electr. scheme is from w123 FSM.

Well it starts pretty easy without glowing too, and I haven't adjusted the valves yet

Only 53300 km on the clock, so the engine is probably not going to die anytime soon

Nice! Is it ex-brannvesenet vehicle?

From the norwegian civil defense, it was used by them as an ambulance according to the previous owner Originally this car has a nice grey color, but they just painted over it with orange and it's coming off in some places, revealing the original pearl grey. Someday it will get a full repaint

Excuse me, I found that original name of the DB7186 is "Zementgrau".