[AshWhite]

There's various types depending on rating - the one I need is 50 amps as opposed to 15 or 20 amps (or similar).

[Kev Loomes]

Ok, wasnt thinking lol!

Agree that the pump draws from the battery prior to starting, but once the TM is running - its engine is keeping the battery charged and topped up - so shouldnt cause the battery to run low - unless there is a problem with the actual charging from the TM.

Ive never had a battery run low using only the van battery to run a TM.

[AshWhite]

Normally Kev, Yes - but with the knackered regulator the TM isn't putting charge back into the battery, and could also drain the van battery at the same time by undercharging. I think I'm right that by fitting a split charging relay which tops up the tm battery once the van battery is full will avoid the problem, as it breaks the connection once the van battery is below a certain level.

[Kev Loomes]

Oh ok Ash, with you now mate, I'm not reading the posts properly! Hope you get it sorted.

[PaulKing]

http://www.ebay.co.uk/itm/Briggs-and-Stratton-Voltage-Regulator-Replaces-394890-/220757374468?pt=UK_Garden_Lawnmowers&hash=item33662a3604#ht_556wt_732

that or it the receiving coil thats up the spout, take it to your local lawn mower specialist they will have one floating around.

[AshWhite]

Cheers Paul, but it's not that one. It's got 4 yellow leads going in to 2 connector blocks, and 1 red wire going to live.

[elliott cleaning]

There's various types depending on rating - the one I need is 50 amps as opposed to 15 or 20 amps (or similar).

Ash - the 421 uses a 20amp regulator

[AshWhite]

Not according to Martin @ Hydramaster when I called today (I gave model number)?

[elliott cleaning]

What's the one you have on there at present - like the one on Paul's eBay link in which case it's a 20 amp - or is it an oblong shape with tram lines on top in which case it is 50 amp

[AshWhite]

Tram lines on top (I think!) and a green translucent panel on the side facingyou as you look at it. It's also got more wires than the one Paul posted.

[richie]

Well we have a Boxxer 421 fitted into a Transit that uses the van battery, never had a problem with the van battery going dead even when the truckmount is running 10 - 12 hours at a nightclub.

[AshWhite]

Richie, does your regulator work ok?