Sometime in the early 80s VW started phasing out the old trusty “fuse box” and replaced it with what VW would now call the “Central Electrics”.
Not only did they do away with the old, unreliable ceramic fuses they also designed a standard item than could be used across the whole VW range and adapted to suit the model it was slotted into.
This part was fitted into a whole manner of VW’s Golf, Jetta, Caddy, Corrado, Passat as well as the T3.
As time goes on, technology changes and problems arise once parts have been fitted for a length of time, car manufacturers are constantly modifying and changing their inventory, you may find that the part numbers or control numbers have changed but any VW dealer or spares supplier will be able to advise you of any supercessions.
VW as well as identifying relays and control units by their part number they also used printed codes on the visible face of the relay or control unit, these are marked in the column “Control No”
| Loc. | Relay function | Control No | Part Number |
| 1 | Not used | – | – |
| 2 | Not used | – | – |
| 3 | Control unit for low coolant warning | 43 | 191 919 376 A |
| 4 | Retardation relay (jx & ky) | 251 919 082 | |
| 5 | Contact close relay for fan for vans with air con | 53 | 321 919 505 A |
| 5 | Electric fan | 141 951 253 B | |
| 6 | Twin tone horn | 53 | 141 951 253 B |
| 7 | Fog lamp | 53 | 141 951 253 B |
| 8 | Relief relay x contact | 100 | 191 937 503 |
| 9 | Not used | – | – |
| 10 | Not used | – | – |
| 11 | Control unit for rear window wash wipe | 191 955 529 | |
| 12 | Indicator/hazard light control unit | 191 953 277 A | |
| 12 | Indicator/hazard light control unit (with towbar) | 431 953 231 | |
| 12 | Indicator/hazard light control unit (with roof turn signal) | 211 953 231 K | |
| 13 | Headlamp washer | 701 955 200 | |
| 14 | Rotating emergency light | 281 941 587 | |
| 15 | Fuse for instrument illumination | ||
| 16 | Fuse for rear fog lamp | ||
| 17 | Not used | – | – |
| 18 | Control unit for heated seat | 443 919 533 | |
| 18 | Buzzer (ambulance) | 3A0 951 307 | |
| 19 | Florescent tube | 441 941 583 C | |
| 20 | Aux. fuse location | ||
| 21 | |||
| 22 | |||
| 23 | Aux. fuse location | ||
| 24 | Electric windows | 431 951 253 H | |
| 25 | Indicators/emergency lights for headlights (ambulance) | 111 953 227 D | |
| 25 | Cruise control | 321 963 141 A | |
| 26 | Thermo cut out for electric windows | 443 937 105 |
| Fuse No. | Component(s). | Rating. | |
| 1 | Radiator fan. | 30 Amp | |
| 2 | Brake lights. | 10 Amp | |
| 3 | Reading lamps,interior lamps, vanity mirror, clock, fag lighter, radio. | 15 Amp | |
| 4 | Hazard light system. | 15 Amp | |
| 5 | Spare. | – – – – – – – – | |
| 6 | Fog lamps. | 15 Amp | |
| 7 | LH side lights/ tail lights. | 10 Amp | |
| 8 | RH side lights/ tail lights. | 10 Amp | |
| 9 | RH headlamp main beam. | 10 Amp | |
| 10 | LH headlamp main beam. | 10 Amp | |
| 11 | Windscreen wipers and washers switch. | 15 Amp | |
| 12 | 2nd heater, electric windows, cruise, electric mirror, A/C, rear wiper | 20 Amp | |
| 13 | Fresh air blower. | 20 Amp | |
| 14 | Heated rear window, heated mirrors, light switch light. | 20 Amp | |
| 15 | Reverse lights. | 10 Amp | |
| 16 | Horn(s) | 15 Amp | |
| 17 | Windscreen wiper motor. | 10 Amp | |
| 18 | Brake warning lamp, heated seats, cruise control, belt warning system. | 10 Amp | |
| 19 | Indicators. | 10 Amp | |
| 20 | Number plate lights, headlamp washers. | 10 Amp | |
| 21 | LH dipped beam. | 10 Amp | |
| 22 | RH dipped beam. | 10 Amp | |