Westy interior light/radio mod.

Following on from another thread (see below) here is a useful upgrade for owners of later Westfalia T3's with the blade type fuse box.

Thing is, your Westy has 2 batteries, the second battery handles the heater (where fitted) and the fridge and nothing else.
To me it seems a bit daft to have this spare battery and yet run your interior lights, radio and cigarrette lighter (Or aux. power socket) from your main "car" battery, running the risk of flattening the main battery when camped up and not plugged into the mains.

The modification outlined below will remedy this oversight and allow you to run your interior lights, radio and fag lighter from the auxilliary battery, how it should have been.

Originally posted by Joker_Club

Im just doing some wiring mods in me Westy, and remembered a conversation with Mr Baxter at his garage and he said the other day that he was going to rewire his Atlantic interior lites, radio etc so they work from the leisure battery. 

I have just done said mod, heres how.

No. 3 fuse in the main fuse box works the lot.
the RED multiplug on the rear of the fusebox, terminal no. 12 has 2 thin red wires coming out, these are the feeds.
I just cut them off at the plug, connected some 17AMP cable and ran a feed from the leisure batts through a 15amp fuse, then removed no. 3 fuse from the `box for good measure.
Now all the interior fluros in the rear, radio, front interior light and fag lighter socket can be used without fear of flattening the main starter battery.

Could do, not a problem, also have auxilliary fuse boxes in stock.

Fridge only works when the engine is running, or it would flatten the batt in super-quick time  Has a relay to control it

Good easy try for the interior lights and radio though

Always disconnect the negative lead before messing with the juice.

You seem to have got a bit muddled there mate, the pin no.12 red wires are in the back of the RED PLUG on the back of the fusebox (NOT no.12 fuse) they are easy to spot as they are red and paired together into the plug terminal. Cut these at the plug, then connect to the 17A cable with either an inline crimp or solder the joint and insulate it, make sure you put an in-line fuse holder or similar between the leisure battery and the joint (nearest the battery is best). Leisure batt goes under the front seats usually.

IF IN DOUBT, GET SOMEONE TO DO IT who knows what they`re doing, it`s only 12V but can still cause a wiring fire !

I just did mine, super simple, I also took piccies but you can't really f**k it up, it's that simple.

Basically a red wire goes up the left hand door pillar and feeds the front interior light(s) and then goes on to feed the rear fluro's.

Easiest way to find the wire is to drop the fuse box down, and look for the single red wire that runs off in the direction of the pillar, in it is a connector, just unplug it and your lights should now stop working.

leave it unplugged and connect in your new wire from the new fuse box you just fitted to run your auxilliaries from. Tape the old supply wire up so it doesn catch owt.