I believe that the GP timer is under the steering column on my 1975 w115 30d, where is the relay located? If still hooked up this might be creating my issues for my manual GP set up -anyone know? Thanks!

Same place I believe.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

hmmm . . . any idea what they look like? pic of timer and relay? Part numbers? Anyone?

Should be obvious once you drop the kick panel.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Like I said when you first posted, your timer should not even be in the new system, usually when one goes to the "push button" its because the timer is bad. Why are you still using it?

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

The description of the wiring in the other thread seems to indicate that the timer isn't in the glowplug system, although it's unclear to me how or if it was disconnected when the manual system was installed.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Yah, I dont understand why the timer still seems too be in the system, its a 115, which I know little about but I don't think thats an issue. He says the problems "intermittent". I'm guessing its the timer which should have been deleted.

warmblood, why did you go to the push button in the first place??

__________________


1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

I'm guessing it's because he went with the pencil plugs and they won't work with a 115 relay so instead of putting in a new relay, he just installed the push button. I think that's a good idea. But I think unless he unplugged the existing relay/timer it would still be operational with the key even if the wire going to the glowplugs is disconnected.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Not, it is disconnected but want to make sure that relay is disconnected too and not sure which is which as I sort out this problem -as I understand it, I have a GP timer which I believe I have disconnected (steering column switch) and a GP relay somewhere . . . thanks

Wanted to manual glow and avoid replacing expensive (and hard to find) timer switches - timer I hope is unplugged unless that is actually the GP relay at steering column

Thats what I am thinking - if I understand correctly, the timer is at steering column but there is also a GP relay somewhere else on a w115 car?

I'm under the impression that the timer and the relay are in the same unit. They certainly are in later models.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Maybe we are dealing with a W115 thing here. In my early 123 GP converted system, the jumper wires merge and go to a 80 amp strip fuse (was 50) on the fire wall then to the solenoid, There was no separate relay just the timer under the dash which is now out of the loop completely.

__________________


1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

If there's no relay does the heavy load pass thru the ignition wiring?

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Thats what I thought too but when you hear stories of gorilla knobs and oil filters under those cars, you never know

I think at this point I would try a new 15 amp (horn) push button switch from Napa, then another solenoid.

__________________


1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"