CAUTION: The same electrical connector housing may contain contacts of different sizes and types.
It is necessary to determine:
- Wire cross-section in a faulty wiring harness
- The area with the electrical connector from which the damaged wiring harness needs to be removed
- Contact type
Using the recommended diagnostic tool makes identifying electrical connectors and faulty contacts much easier and faster.
You can also refer to the vehicle's electrical diagrams (available from dealers) to identify wire harnesses and electrical connectors.
The comparison table can be used to determine the wire size in a wire harness for a suitable harness with insulation color termination. It can also be used to determine the correct insulation trim length on a wire harness.
Comparison table
| CABLE RANGE | PLACE OF JOINTING | STRIP LENGTH |
| from 0.35 to 1.50 mm² | RED | from 6.00 to 7.00 mm |
| from 1.00 to 2.50 mm² | BLUE | from 6.00 to 7.00 mm |
| from 4.00 to 6.00 mm² | YELLOW | from 9.00 to 9.50 mm |
Removal contacts from electrical connectors
It should be noted that some electrical connectors are equipped with locks that prevent the contacts from being removed from the connector. The following illustrations show examples of such connectors. Before removing a contact from an electrical connector, it is necessary to disconnect the lock. Some locks require a special tip (included in the kit) to disconnect. Most locks can be disconnected with a suitable small screwdriver.
Some types of electrical connectors have internal or external seals to prevent moisture from getting in. It is not usually necessary to remove these seals, but check for them when connecting electrical connectors.
The illustrations show examples of each tip used for various types of electrical connectors. There are many different types of electrical connectors, so only one example of each tip is shown. The technician should use experience and common sense to select a tip for electrical connectors not shown. Care should be taken to avoid causing additional damage when removing contacts from the electrical connector.
NOTE: Examples of tips for extracting contacts and disconnecting retainers.








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NOTE: The diagram shows the electrical connector types, contacts/sockets, contact extraction tip, and retainer release tip.
| Type of contact in an electrical connector | Pin or socket | Extraction tip | Retainer release tip |
| Mulitlock 040 Series | D | A | |
| Mulitlock 040 Series | B | A | |
| Mulitlock 070 Series | B | B | |
| Mulitlock 040 Series | D | B | |
| Econoseal III 070 Series | D | B | |
| Econoseal III 070 Series | B | B | |
| Econoseal III 070 Series | B | B | |
| Econoseal III J2 | D | B | |
| Econoseal III 250 Series | B | F | |
| Econoseal III 250 Series | D | B | |
| Econoseal III 250 Series | B | F | |
| Econoseal III 250 Series | D | B | |
| Microtimer II 1.5 mm | D | C | |
| Microtimer II 1.5 mm | B | C | |
| Standard Power Timer 4.8 flat | D | G | |
| Standard Power Timer 5.8 flat | B | D | |
| Standard Power Timer 5.8 flat | B | D | |
| Standard Power Timer 2.8 flat | D | D | |
| Standard Power Timer 4.8 flat | D | G | |
| Standard Power Timer 5.8 flat | B | D | |
| Ford 2.8 flat | D | E | H |
| Mulitlock 070 Series | D | B | |
| Mulitlock 070 Series | B | B | |
| Junior power timer 2.8 flat | D | D | |
| Sumitomo TS90 connector | B | B | H |
| Modu IV gold plated | D | B | |
| Mulitlock 040 series gold plated | D | A | |
| Micro qualock | D | I | |
| EECV | D | B | |
| EECV | D | B | |
| Kostal series diam. 1.50 | D | J | |
| AMP 6.3 flat | D | B | |
| Junior power timer 2.8 flat | D | D | |
| Series 2.8 | D | B | I |
| Sumitomo TS90 connector | D | B | H |
| Ducon 0.60 gold plated | D | K | |
| AMP 6.3 flat | D | D | |
| Econoseal III 250 Series | B | F |
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