Webasto electrical connections

DanTribe

DanTribe

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Hi
I'm about to connect up my new Air Top 2000, and am obviously completely dyslexic when it comes to reading wiring diagrams.
I assumed that I would connect directly to the battery terminals, not going to my switch panel.
However the supplied diagram says connect red wire to 30 and the brown one to 31 with another connection to D+/61. I've no idea what that means.
Instructions also say that the connection should be "ideally from the vehicle's electricity system" [sounds logical, don't know what the alternative would be?]
There are several diagrams showing which way up to fit the fuse holder, I can cope with that.
Help please, in terms like red wire to positive etc , no more complicated than that.
I've tried reading the Flemish version, twice, but that's double Dutch as well.:confused:
Dan
 
AFAIRThe red and brown will just be connected to a good pos and neg source on your boat, they will be the larger section wires so ensure that any supply has adequate section.There should be a substantial fuse on the red lead.
The 'other' connection is probably positive to whatever control switch is fitted this needs a fuse of around 5 amps.
The above is based on my limited experience with Webastos and my very poor memory so get confirmation from another source ( Perhaps David will role up soon??)
( As Far As I Recall!!)
 
The most important thing is to wire it so that it can't be switched off accidentally. ie wire the power directly to the battery via the fuse, not via a switch panel.
When you turn the Webasto off using the controller, it goes through a cool down cycle before shutting down. So it's important to only be able to shut it down via the controller.
 
Thanks everybody, you've confirmed what I thought. Sitting in a warm office in front of a computer it's all blindingly obvious. Hanging upside down in a freezing cockpit locker and the doubts set in.
Thanks for the reference to DIN 72552, i never knew that, although for a marine application a + & - symbol would have been handy, rather than 30 & 31.
 
Do you have a 2000 or a 2000 ST and is it a genuine marine or vehicle type? the power supply for the timer is from within the heater but the extra connection often supplies power from the ignition to provide a shutdown on stopping the vehicle or make the timer run permanently instead of a time out, sometimes it's connected to the lighting circuit on 1531 timers. If a vehicle heater it may be for the ADR (dangerous goods) operation. It would help a lot if I know the answer to the question posed earlier or if you could let me know the connector number with it's pin number from the wiring schematic in the kit.
 
Just had a proper look and the D+ (alternator) or 61 (ignition switch) connection is indeed for truck ADR usage so I assume you have a vehicle ST unit.
Just for clarity that should be a gray cable connected to pin 4 on the X6 (main) connector.
 
Last edited:
David2452 said:
Just had a proper look and the D+ (alternator) or 61 (ignition switch) connection is indeed for truck ADR usage so I assume you have a vehicle ST unit.
Just for clarity that should be a gray cable connected to pin 4 on the X6 (main) connector.
Click to expand...
David
Thanks for your help. I know I'm asking silly questions, but it's a learning process for me.
I have an Air Top 200ST, bought at Southampton Boat Show from the Webasto stand. The salesman is actually a dealer from Norfolk and I have to assume that he sold me the correct kit. It all seems fine. I did also meet the same guy at London Boat Show and asked him some dumb questions, so he isn't a fly by night.
I was trying to make sense of the wiring diagrams from the Installation Instruction book, but as there are 4 pages, I was probably reading the wrong one. Am now reading page 30 which doesn't show connection D+/16. The harness is on the boat, so can't tell you the connector or pin number at the moment.
I am confident now that I know that 30 is the positive and 31 is negative. [but why don't they just say so!]
 
The wiring diagrams in the manual are for various vehicles Dan and they are really designed for dealer fit, especially on trucks that must conform to regulations. The Marine install manual just says connect direct to the battery, if you want a copy of that document drop me a PM. BTW if it was from who I think then it is a pukka job but the kits sometimes are missing the marine specific manual which is designed for DIY and very easy to follow.
 
David2452 said:
The wiring diagrams in the manual are for various vehicles Dan and they are really designed for dealer fit, especially on trucks that must conform to regulations. The Marine install manual just says connect direct to the battery, if you want a copy of that document drop me a PM. BTW if it was from who I think then it is a pukka job but the kits sometimes are missing the marine specific manual which is designed for DIY and very easy to follow.
Click to expand...
David
PM sent.
I do seem to be missing the idiots guide and this probably accounts for my series of silly queries, I've been trying to understand instructions beyond my technical ability.
Thanks again, your help is much appreciated.
 
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