Mystery wiring - engine bay

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Slaydog
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Mystery wiring - engine bay

Post by Slaydog »

Hi all.
Just exploring some mystery wiring in the engine bay that was wrapped up in masking tape(!) in 3 places.

Not sure the point of the soldered red which looks like a random spur off the wire to the idle cut off?

Also, there’s a red wire with an open connection (next to my index finger)

No sign of any red wires connected to carb or manifold heater.

Are the above just redundant connections? I’ve taped them up in insulation tape for the time being.

Thx,
Ben

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1990 Holdsworth Villa 3 Conversion
RHD, Petrol 1.9
1990 Holdsworth 1.9DG on 2e3 Manual 4 Speed

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937carrera
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Re: Mystery wiring - engine bay

Post by 937carrera »

I was looking at a similar issue on my WBX a couple of days ago. Mine has a Weber carb and I came to the conclusion that it did not have all the same connections as a Pierburg.

Page 4 of the pdf below should helpyou lookyourself, though I'm sure someone else on here will know exactly what each of the connections is for (maybe not the spur)

http://syncrosport.com/info/wiring/VW_T ... _SP_DG.pdf
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine

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Mocki
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Re: Mystery wiring - engine bay

Post by Mocki »

the lives to the carb are black, they feed from the coil live and all join together at the carb, the thick red for the heating element comes from the relay in the balck box in the corner of the engine bay and that is controlled by the 2nd sender in the thermostat housing if its a late, or by the switch in the metal cross pipe above the dissy if its early
Steve
tel / txt O7947-137911
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1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper 
 

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itchyfeet
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Re: Mystery wiring - engine bay

Post by itchyfeet »

Beware none of the connections over the engine, black ignition 12V or red thermoswitched heater feeds are FUSED.

A short to the engine and your wiring melts, if it melts through a fuel hose you can guess the results.

insulating tape is not a durable insulation

I have added fuses in the black box, I reccomend it.

ImageP1090282 by Paul_Barr, on Flickr
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
itchylinks

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itchyfeet
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Re: Mystery wiring - engine bay

Post by itchyfeet »

Image2e3 whos who by Paul_Barr, on Flickr
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
itchylinks

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Slaydog
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Re: Mystery wiring - engine bay

Post by Slaydog »

Thx so much for the helpful contributions. Especially the wiring diagrams @937carerra and safety advice / pics from @itchyfeet.


1990 Holdsworth Villa 3 Conversion
RHD, Petrol 1.9
1990 Holdsworth 1.9DG on 2e3 Manual 4 Speed

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