300EE320 did an excellent job with the DIY article describing, with many pictures, the replacement of the wiring harness in an E320.

W124 Engine Wiring Harness Replacement
By: 300EE320
10/25/03

In the reader's opinion (yours) - is the V8 - E420 much different?

This winter I purchased a project car (E420). It needs the new throttle actuator, and may need a new harness.

So how's the E420 - would it be similar in difficulty?

Many thanks. With the warmer weather coming - I'll be playing on weekends.

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Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup

Not much different. Take pictures if in doubt. Throttle actuator removal, will result in a couple of busted vacuum lines, and a breather hose or two (check your engine, and you can guess which ones). Buy an extra gasket just in case.
Get the throttle actuator from a reputable rebuilder.
Does yours still have distributors?

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D

It's considerably easier - roughly half the end points, and I'd say about half the time requirement.

Yup...8's are easier then 6's.

Beckman is the only rebuilder we'll use for TA's.

Jonathan

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Jonathan Hodgman
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Enthusiast Service, Restoration & Tuning.
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Could probably do blindfolded on the 2nd or 3rd one.

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95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K