Well I didn't draw one up because it will be the same as the one posted by Dippy (thanks for that)
I will post up all the parts though, in the diargram you put "22u" I assume that's 22uF.. I'm still not familiar will all the acronyms and lingo. I couldn't get a 100pf x2 unless I wanted to buy 10, so hopefully a 1000pf will do, plus the varistor I chose has an internal capacitance of 22nF.
From reading this very helpful document:
http://www.epcos.com/inf/70/db/var_01/01930196.pdf
I get the impression all that is really needed is a varistor since it's built to deal specifically with load dump and other automobile specific transients.. at least I couldn't find any documentation saying that it should be used with other filters, or maybe they just assume that's obvious and I wouldn't know one way or the other.. either way it can't hurt things.. about the 15kv spikes, I found no info on that anywhere in all my googling.. mostly just the load dump.. which only occurs if your battery gets disconnected while the car is on... I'm not quite so sure the automobile enviroment is that bad, or all the guys I know running voltage regs with no filter cap even would have blown them up by now.. not to say that's right, because the potential is definitely there for some destructive AC and you need to deal with that, but I think the filter suggested by Dippy will be sufficient along with the best varistor I could find and the voltage reg designed for auto use... by the way, 100mA will be enough for the picaxe right? I heard that's the max it can draw.. which it won't though, as it will only be intermittently switching darlington arrays and putting out a PWM... I can't see that consuming a lot.
So here's my parts list.. I sure hope I have everything, it's taken me forever to compile this, I'm trying to get some of the most used basic building blocks of electronics here, so if you have any suggestions of other little handy things I might run into needing please suggest.
25x LM317TFS-ND IC REG ADJ 1.5A 3 TERM TO-220 $10.39 - current regs for high power LED (other project)
10x LM555CNFS-ND IC TIMER SINGLE 0-70DEG C 8-DIP $5.30 - for random stuff
5x CT94EW103-ND POT 10K OHM SQ CERMET TOP $7.35 - 18 turn input pot for picaxe
10x 3.6W-1-ND RES 3.6 OHM 1W 5% METAL OXIDE $1.21 - different resistors for different current from lm25
10x 1.6W-2-ND RES 1.6 OHM 2W 5% METAL OXIDE $1.46 - "
10x 1.8W-2-ND RES 1.8 OHM 2W 5% METAL OXIDE $1.46 - "
10x 1.2W-2-ND RES 1.2 OHM 2W 5% METAL OXIDE $1.46 - "
10x 22KH-ND RES 22K OHM 1/2W 5% CARBON FILM $0.56 - for picaxe serial interface
10x 47KH-ND RES 47K OHM 1/2W 5% CARBON FILM $0.56 - random
10x 4.7KH-ND RES 4.7K OHM 1/2W 5% CARBON FILM $0.56 - random
3x 568-1617-1-ND DIODE SCHOTTKY 30V 200MA DO34 $0.90 - for picaxe serial interface
5x ULN2803APG-ND IC DRIVER DARL 8CH 50V .5A 18DIP $3.90 - darlington arrays for switching LED arrays
10x 1.0KH-ND RES 1.0K OHM 1/2W 5% CARBON FILM $0.56 - random
15x 10KH-ND RES 10K OHM 1/2W 5% CARBON FILM $0.84 - random/picaxe interface
10x 497-1448-5-ND IC REGULATOR POS 9V TO-220 $5.61 - random
1x LM2931AT-5.0NS-ND IC REGULATOR LDO 5V TO220 $1.72 - picaxe power
200x 5.1QBK-ND RES 5.1 OHM 1/4W 5% CARBON FILM $4.12 - resistors for amber LEDs
200x 9.1QBK-ND RES 9.1 OHM 1/4W 5% CARBON FILM $4.12 - resistors for red/orange LEDs
1x 399-3839-1-ND CAPACITOR TANT 47UF 10V 20% SMD $1.50 - ESD matched cap for 5v reg hopefully I can solder this)
2x 3M5462-ND SOCKET IC OPEN FRAME 14POS .3" $0.32 - sockets for 14Ms I bought for other projects, I need a 28 pin socket too, but what spacing? 0.3" or 0.6" ? I couldn't find that in the manuals.
10x 399-3693-1-ND CAPACITOR TANT .33UF 35V 10% SMD $1.79 - input caps for 9volt regs I already have. 3.2x1.6mm smd, hopefully I can pull that off.
20x 1N4001-TPMSCT-ND RECTIFIER 1A 50V DO-41 $0.92 - random
15x ED2580-ND TERM BLOCK 5.08MM VERT 2POS PCB $3.99 - for the LED control board
10x ED2581-ND TERM BLOCK 5.08MM VERT 3POS PCB $4.00 - "
10x BC1078CT-ND CAP .010UF 50V CERAMIC X7R 10% $0.73 - bypass caps for ICs
10x BC1298CT-ND CAP .10UF 50V CERAMIC X7R 0805 $0.76 - "
10x 1N5402-E3/51GI-ND DIODE GP 3A 200V DO201AD $1.82 - random
4x 6A10DICT-ND RECTIFIER SILCON 1000V 6A R-6 $2.04 - blocking diodes for marker/brake input
1x M8274-ND CHOKE RF HASH 500UH 20% FERRITE $1.48 - choke for picaxe filter
3x 495-1451-ND VARISTOR 14V RMS 20MM RADIAL $1.77 - varistor for picaxe filter
1x BC1609-ND CAP FILM MKP .22UF 275VAC X2 20% $0.67 - X2 cap for picaxe filter (with 47ohm, how many watts for the resistor?)
10x 486-1172-ND FUSE-CLIP OG BRASS 5X20MM PCB $1.00 - fuse clips
2x 486-1234-ND FUSE 1A 250V 5X20 FAST GLASS $0.44 - fuse for picaxe
5x 180H-ND RES 180 OHM 1/2W 5% CARBON FILM $0.27 - for picaxe serial interface
1x BC1599-ND CAP FILM MKP .001UF 275VAC X2 $0.37 - second X2 cap for picaxe filter.
I think I have everything.. still need to add the 28pin socket and a 47ohm resistor for the filter of appropriate wattage.. also the choke I got isn't 3amp isn't only 2, I couldn't find anything in 3.. but how much power is gonna be going through there?
..oh and I bought a couple extra varistors, I plan on putting just a varistor before the 9 volt regs for load dump situations, should one arise.