Prospero's Garage
Enlarged, laminated color wiring diagrams for over 500 models of classic cars & motorcycles.
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    • Alfa Romeo
      • Spiders
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      • 1600, 2002
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        • 3 Series e21, e30, e36
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      • Cherokee, Wagoneer, & Others
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      • SL & SLC
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      • MGB US Market
      • MGB UK Market Cars
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      • MGA MGC MGTA - MGTF & MG1100
    • Mini - Vintage
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    • Norton Motorcycles
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      • Porsche 356, 912, 924, 928
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    • Triumph Cars
      • Spitfire & GT
      • Stag Series
      • TR Cars
    • Triumph Motorcycles
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      • Volkswagen Karmann Ghia
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      • 120's, 140's, 160's, 444, 544's
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      • 1800
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  1. Shop
  2. BMW Cars
  3. 3, 5, 6, & 7 Series
  4. 3 Series e21, e30, e36

  • Alfa Romeo
    • Spiders
    • Other Alfas
  • Austin Healey
  • BMW Cars
    • 1600, 2002
    • E3 Bavaria & E9 Coupe
    • 3, 5, 6, & 7 Series
      • 3 Series e21, e30, e36
      • 5 Series e12, e28, e34
      • 6 Series e24
      • 7 Series e23, e32
      • Z3 E36/7, E36/8
  • BMW Motorcycles
    • R Bikes, 1960's & 1970's
    • R Bikes 1980's & 1990's (Two valves)
    • K100 & K75
    • K1100 & K1200
    • R1100, R1150, R1200
  • Chevrolet
    • Chevy Camaro
    • Chevy Corvair
    • Chevy Corvette
    • Chevy Trucks
  • Datsun
  • Ducati
  • Ford
    • Mustang
    • Trucks F Series
    • Bronco Series U
  • Harley Davidson
    • HD FL
    • HD FX
    • HD XL
  • Honda
  • Hudson
  • Jaguar
  • Jeep
    • Cherokee, Wagoneer, & Others
    • CJ5 & CJ7, Wrangler
  • Land Rover
    • LR Series I
    • LR Series II
      • Diesel Motors
      • Petrol Motors
    • LR Series III
  • Mazda
  • Mercedes Benz
    • SL & SLC
    • Other Mercedes
  • MG
    • MGB US Market
    • MGB UK Market Cars
    • MG MIdgets US Market
    • MG Midgets UK Market
    • MGA MGC MGTA - MGTF & MG1100
  • Mini - Vintage
  • Nash / AMC Metropolitan
  • Norton Motorcycles
  • Porsche
    • Porsche 356, 912, 924, 928
    • Porsche 914
    • Porsche 911
  • Sunbeam
  • Toyota
  • Triumph Cars
    • Spitfire & GT
    • Stag Series
    • TR Cars
  • Triumph Motorcycles
  • Volkswagen
    • Volkswagen Karmann Ghia
    • Volkswagen Kombi / Bus
    • Volkswagen Beetle/Bug
  • Volvo
    • 120's, 140's, 160's, 444, 544's
    • 240 Series
    • 1800
  • Gift Card
  • Interior Trim
1977 BMW E21 320i
1977 BMW E21 320i
$17.95
1978 BMW E21 320i
1978 BMW E21 320i
$17.95
1979 BMW E21 320i
1979 BMW E21 320i
$17.95
1980 1981 1982 1983 BMW E21 320i
1980 1981 1982 1983 BMW E21 320i
$17.95
1983 BMW E30 318
1983 BMW E30 318
$19.95
1984 BMW 325 e30
1984 BMW 325 e30
$19.95
1984 BMW e30 318
1984 BMW e30 318
$19.95
1985 BMW e30 318 325E 325I
1985 BMW e30 318 325E 325I
$19.95
1986 BMW e30 318 325E 325I M3 12 Pages!
1986 BMW e30 318 325E 325I M3 12 Pages!
$21.95
1987 BMW e30 318 325E 325I M3 12 Pages!
1987 BMW e30 318 325E 325I M3 12 Pages!
$23.95
1988 BMW e30 318 325e 325i M3 12 Pages!
1988 BMW e30 318 325e 325i M3 12 Pages!
$21.95
1989 BMW e30 318 325i M3 12 Pages!
1989 BMW e30 318 325i M3 12 Pages!
$23.95
1990 BMW e30 318is M3 325i 325is 325ix 13 pages
1990 BMW e30 318is M3 325i 325is 325ix 13 pages
$23.95
1991 BMW e30 318i 318is M3 325i 325is 325ix 13 pages
1991 BMW e30 318i 318is M3 325i 325is 325ix 13 pages
$23.95
1992 BMW E30 318 325 17 pages
1992 BMW E30 318 325 17 pages
$23.95
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Terms & Conditions

100% Satisfaction Guarantee and Other Stuff Worth Reading

We are car and motorcycle enthusiast and started this site because we happened on a good idea at the right time.  We want, to the best of our abilities, to make every customer happy – because to us, you’re a fellow car/bike enthusiast.

If you, for any reason, are unhappy with your diagram, we will either replace it or refund your money without question.

Our Error:  If we have made an error in the diagram we’ve sent you (and hey, we’re human and we do make mistakes every now and then) we will immediately send you the proper diagram.  We’ll also send you a postage paid label so that you can drop the first diagram in the mail; we’re assuming that you’ll send that one back to us.

If You Goof Up:  If you realize you hit the wrong button upon ordering, contact us as quickly as possible – if we haven’t shipped yet, we’ll substitute the right diagram.  If you get the diagram, just send it back (you pay the return postage) and we’ll send you the diagram you want (and we pay the postage to you!).

If You’re Just not Happy:  If, for any reason, you don’t like the diagram – send it back to us (you pay the postage) and we’ll refund your entire original payment.  No questions asked.

If we don’t have a diagram for your car:  Send us a note – we keep them and add cars based on demand.  If you’ve got good clean copies of factory diagrams, that goes a long way to influencing our decision to add a car to our library.  If you supply us a diagram, we’ll give you a free copy of the color diagram that we eventually produce.  That said, we’ll only do diagrams for a series of years of a car, not just a single year, and only if we think we can sell enough diagrams to warrant the effort.  Sorry, there just aren’t enough Lamborghini Urraco’s to make the effort worthwhile – even though we love that car.

Volume Discounts and Shop Discounts:  Generally, we start discounting when you buy 10 or more diagrams.  Let us know what you’re thinking and we can talk about it.  We are happy to support volume purchases by Clubs.

Donations:  And speaking of Clubs, we are happy to donate diagram certificates to your clubs raffle.  Contact us at prospero@colorwiringdiagrams.com and let us know how big your club is and when your raffle will be held.


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