Club 80-90 Forums

Recently acquired a fleabay bargain but unfortunately the controller is missing, along with the fuel pump. It's a 12v petrol one, ex-Bluestar allegedly...I've got a wanted out but also trying to get a wiring diagram.
Any help or advice gratefully received

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I only have German manuals for this one - if they are any help.

Thanks, that's a pretty good start! It's DIN wiring with track numbers so I should be able to work it out.

Identifying the correct timer/controller (or the different variants) will be the next hurdle.

Any of the digital timers will work, like this oval one:


I've not worked on one of them but I have a feeling that they operate on just two switched heat settings - I may be wrong there though. They are 5Kw aren't they - a bit of overkill if it's going in a T3.

IIRC the factory fitted the BBW 46 which as the name suggests was 4.6kW. It is a water heater, so with 18-odd litres of coolant to raise I guess VW wanted a big'un. I want to integrate it with an auxiliary heater I have bought, so it can do double duty as a night heater as well as a pre-heater
I don't like the look of the oval ones tbh, they look too "modern" for me. The rectangular ones look identical but some are labelled "combination" and have a thermostat dial on the front, not sure how that affects their performance or application as they are meant for AirTop?

Yes, the combo ones with the dial aren't meant for coolant heaters as they don't normally have infinitely variable output settings. The thermo top t is sub-named BW50/DW50
You are looking for a 1531 timer then - part no. 905797 (12v) or possibly an older 1529 one - part no. 82774A (12v) but these don't seem to be very common.

Thanks for the part numbers and advice. I have found a UK stockist who have the non-variable 5-buttton type. Not cheap, but I've got a mate who will recon the unit for beer money and it cost me so little in the first place, there's some budget left to spend on making it a 100% safe installation. A reliable controller is a must-have in my book.