BUYER GUIDE · QUOTATION COMPARISON
Wire Harness Quote Breakdown: Compare More Than the Unit Price
Two wire harness quotations can show different unit prices because they include different work. Before deciding which is less expensive, align the drawing revision, component basis, order quantity and included charges.
Use the worksheet below to separate recurring assembly cost, one-time charges and any separately agreed material purchase. An unclear item should stay marked “pending”—not silently become zero.
Start With One Comparable Build
Give every quotation the same reference: harness part number, drawing and BOM revision, batch quantity, required inspection records and shipment scope. A price for a different configuration is not a like-for-like comparison.
Same configuration
Identify specified wire, connectors, terminals, protection and labels. List any proposed substitutions separately and keep their approval status visible.
Same quantity
Separate the batch being quoted from sample quantities and tentative future demand. Do not compare a small-batch price with a forecast-volume price without noting the condition.
For detailed component approval, see original vs. alternative components. For quantity planning, see annual forecast vs. order quantity.
COPYABLE WORKSHEET
Ask What Each Line Covers
| Quote line | Information to record | Question before approval |
|---|---|---|
| Finished assembly | Unit price, currency, quantity and configuration revision | Which materials, assembly operations and routine checks are included? |
| Samples | Sample quantity and any separate charge | Are samples additional units, and is their charge separate from production? |
| Tooling or fixtures | Item, amount and whether the charge is one-time | What is being supplied, who owns it, and when would a new charge apply? |
| Setup or engineering work | Quoted scope and charging basis | Is this charged once, per batch or only after a design change? |
| Special testing or reports | Required checks and records, included or separately quoted | Do both quotations cover the same acceptance requirements? |
| Additional material purchase | Affected component, purchasing quantity and charge | Is unused material separately purchased, already included in the unit price, or not required? |
| Packing and transport | Included packing, freight scope and agreed delivery term | Are you comparing the same shipment scope? |
| Validity and open items | Expiry date, exclusions and assumptions | What still needs confirmation before the order can be accepted? |
These are questions to clarify, not a claim that every supplier charges every item. Record “included,” “not applicable,” a stated amount or “pending” for each line.
AVOID DOUBLE COUNTING
Separate Material MOQ From Assembly Quantity
A component purchasing quantity may differ from the number of finished harnesses ordered. Ask how that difference is handled before adding a separate material charge to the comparison.
If the unit price already includes the relevant material cost, do not count the same cost again. If excess material is purchased separately, clarify the quantity, ownership, storage arrangement and whether any future use or credit has actually been agreed.
A quotation comparison must not assume that an annual forecast authorizes advance purchasing or that unused stock will automatically be credited later.
A Lower Unit Price Can Still Mean a Higher First Order
Fictional arithmetic example only—not Cablum pricing, MOQ or a customer quotation. Assume the same specification and 100 assemblies. Exclude freight, taxes and every other charge for this illustration.
| Comparison | Quote A | Quote B |
|---|---|---|
| Unit price | USD 5.00 | USD 5.60 |
| 100 assemblies | USD 500 | USD 560 |
| One-time fixture charge | USD 150 | USD 0, explicitly confirmed |
| First-order total within this scope | USD 650 | USD 560 |
Quote A has the lower unit price, but its first-order total is USD 90 higher. That does not establish which offer is better overall: specification compliance, quality requirements and the unresolved commercial scope still matter.
For a repeat order, do not simply remove the fixture charge and assume all other terms remain unchanged. Ask whether the configuration, batch size, material basis and quotation validity still apply.
Request a Clarified Quote Without Rewriting the Project
You can adapt this wording:
Please confirm that your quotation is based on our stated part number, drawing/BOM revision and current batch quantity. Separate the finished-assembly price from any sample, tooling, setup, special testing or additional material charges. Identify what is included, excluded or still pending. Please also confirm the quotation validity and whether any one-time charges would apply again to a repeat order.
Keep the supplier’s clarification with the quotation it amends. If a component or drawing changes, request an updated quotation reference rather than combining unrelated versions.
Before You Compare the Totals
Should an unquoted item be treated as free?
No. Mark it pending and ask whether it is included, excluded or not applicable. A blank line is not confirmation of zero cost.
Is a tooling charge always a one-time charge?
No. Ask what the charge covers and when it may recur. Do not assume ownership, maintenance, reuse or replacement terms from the label alone.
Does the quotation confirm the delivery date?
Check its conditions separately. Use the lead-time confirmation guide to identify the starting conditions and completion milestone.
Give Cablum a Clear Quotation Basis
Cablum processes custom wire harnesses to customer drawings and specified wire and connector requirements. Send the current drawing, BOM, batch quantity and any required inspection documents. Identify mandatory parts and whether alternatives may be proposed for review.
Project-specific pricing, sourcing, testing and timing require review; this guide is not a standard price list or commercial commitment.