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40Pin Amp Connector Harness 6660-053 - Bubbles Supply

40Pin Amp Connector Harness 6660-053

Part #: 6660-053

$5.37
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this cord/connector

The Sundance Spas 4-Pin Amp Connector Harness (6660-053) is an OEM sensor wiring harness designed for Sundance spa systems. This genuine replacement connector ensures reliable communication between your spa's control system and temperature sensors, resolving common error codes including HH (high heat), ICE (freeze protection), and OH (overheat) conditions that can shut down your spa operation.

At Bubbles Supply, we guarantee this OEM harness delivers an exact fit for your Sundance spa's sensor network. Every connector ships the same day you order and includes our full 1-year warranty for complete peace of mind. The 4-pin configuration matches Sundance's factory specifications precisely, ensuring proper signal transmission and system diagnostics. Always verify your existing connector's pin count and configuration before installation to confirm compatibility with your specific spa model.

Exact part number

6660-053

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 4-pin sensor connector
  • AMP connector harness
  • spa sensor wiring harness
  • Sundance sensor harness
  • temperature sensor connector

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • HH error code (high heat) displayed on topside panel
  • OH error code (overheat) shutting down spa operation
  • ICE error code triggering false freeze protection
  • Spa displaying intermittent or erratic temperature readings
  • Control system unable to read water temperature sensor
  • Spa entering protective shutdown with no clear cause

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Count the pins on your existing connector — confirm it is a 4-pin AMP-style configuration before ordering
  • Inspect the existing harness for corrosion, broken locking tabs, or damaged wire insulation to confirm the harness is the failure point
  • Verify your spa is a Sundance brand unit — this is an OEM Sundance part and may not cross-fit other brands
  • Check whether the error code is cleared by reseating the existing connector before replacing — a loose connection can trigger the same fault codes
  • Identify which sensor circuit the harness serves (water temperature, hi-limit, or freeze sensor) to ensure you are replacing the correct harness

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Easy — DIY-friendlyTypically 15-30 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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