I did that in 1995 on my escort. The glow relay was flakey on it. The MB relays are pretty good, and tend to either work or not.

But I agree with you. Manual control is best. therefore a 240D 3.0 is better than a 300D as you have manual control of the heater, and if the 240D was a 4 speed, then you have manual trans control too.


 > Dieselhead wrote:

 The 80 240D has pencil glow plugs, with an odd, maybe one year
 glow relay.

 the 81 has the "normal" style GP relay, with 6 pins, 4 of
 which are used for GPs.

 Is it easier to swap the relays or to swap the plug for the
 sender? I first thought the sender, but since I don't have the
 tools, Is it easier to figure out the wiring and swap the
 relays?  Your thoughts?

I converted the '78 to parallel from series glow plugs.  And so
I wired a push button on the dash to trigger them.  I _really_
like that.  So I keep thinking I will change the newer cars to a
push-button glow plug - but I'm lazy and it's not broken...

So if that were my car, that would be plenty of motivation to
make it a push-button glow plug system!

--     Philip

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