Home /QuickMech™ 6-Pack Relay Bypass Switch Kit — Automotive Diagnostic Tester for Fuel Pumps, Window Motors, Headlights & More (Replaces 9036, 9037, 9038)
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QuickMech™ 6-Pack Relay Bypass Switch Kit — Automotive Diagnostic Tester for Fuel Pumps, Window Motors, Headlights & More (Replaces 9036, 9037, 9038)
$87.00
or 4 interest-free payments of $21.75 with Shop Pay
●ships today if ordered by 2pm ET
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LifetimeWarranty
Free ShipOrders $49+
30-DayReturns
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Ships from Ohio · Free standard shipping on orders $49+. Expedited available at checkout.
Product Details
Everything you need to know — features, specs, fitment, and answers to the most common questions.
Energize circuits on command
Plug into the relay socket and trigger fuel pumps, fans, motors, and lights manually — isolate the fault in minutes.
Six switches for multi-circuit hunts
Leave bypasses planted across several relays and chase intermittents while driving.
Fits the common relay footprints
Covers the standard sockets used across domestic and import fuse boxes (replaces 9036, 9037, 9038 styles).
Lifetime warranty — no receipt
If it fails under normal use, we replace it. Ships same-day from Columbus, OH.
- How does this prove whether a fuel pump is bad?
- Pull the pump relay, plug in the bypass, and flip the switch. Pump runs — the pump and wiring are good, look upstream at the relay or control side. Pump silent — test power at the pump next.
- What is the warranty?
- Lifetime warranty. If it fails under normal use we replace it — no receipt, no questions asked.
- Shipping details?
- Same-day dispatch from Columbus, OH on orders before 2pm ET. Free standard shipping at $49 and up.
Customer Reviews
119 verified reviews · 4.8 average · based on actual purchases.
4.8
★ ★ ★ ★ ★
out of 5 · 119 Reviews
PD
Mar 12, 2026
★★★★★
Fuel pump diagnosis in minutes, not guesses
Customer swore the pump was dead. Bypass switch in the relay socket, pump ran, problem was upstream — saved them a pump and me a comeback. These fit the common relay footprints and the leads are long enough to run while driving.
✓ Verified Purchase · 45 found helpful
OM
May 6, 2026
★★★★★
Six in the kit means one on every circuit
Intermittent no-start hunts sometimes mean bypassing two or three relays at once and driving the car. Having six switches lets me leave them planted across circuits. Built solid — the switch action feels rated for the amperage.
✓ Verified Purchase · 27 found helpful
WP
Jun 19, 2026
★★★★☆
Found my intermittent headlight gremlin
Swapped the bypass in for the headlight relay and could trigger the circuit manually — traced the fault to a corroded connector in an afternoon. Instructions are basic; know your relay pinout before you start.
✓ Verified Purchase · 14 found helpful
