When you're chasing a no-start or intermittent fuel pump problem, a relay bypass tool can tell you whether the relay, the wiring, or the pump itself is the culprit. But relay kits often assume one relay design fits every car. The MICTUNING 9038/9038A Relay Bypass & Tester - Diagnostic Scanner Tools Kit sidesteps that by bundling both relay bypass configurations into one six-pack at USD 24.90.
Quick verdict
This kit is built around the 9038 and 9038A relay bypass designs. You get both configurations in the same purchase, so whichever variant your vehicle needs is covered. If you diagnose fuel pump relay circuits on US, German, Japanese, or Korean cars, this kit provides the bypass and tester function you need for those relay numbers. The main caveat is selection: choose the correct type before you order.
Who it suits
This is a practical fit for DIYers who already do basic electrical troubleshooting and want an automotive diagnostic tool they can keep in the garage. It also suits technicians who regularly see GM, BMW, Audi, Chrysler, and other vehicles that use compatible relay footprints. Since it's a direct replacement for relays 9036, 9037, and 9038, you can reach for it across those relay numbers rather than hunting for a different tool each time.
What stands out from the listed details
- Both variants are included: Type 1 (9038, without amp loop) and Type 2 (9038A, with amp loop).
- Rated for 12V coil voltage and 30A DC current, with a normally open contact configuration - matching specs for fuel pump relay bypass work.
- Specified for automotive and control equipment panel use, so it's not confined to a single car brand.
Meaningful trade-offs
The biggest consideration is variant selection: the amp-loop version adds a way to measure current, while the plain bypass version is simpler. Also keep the 30A rating in mind - a diagnostic bypass tool, not a permanent high-load switch. And because it targets automotive and control panel applications, it's built around typical car electrical systems rather than heavy-duty or high-voltage setups.
Product note
MICTUNING 9038/9038A Relay Bypass & Tester - Diagnostic Scanner Tools Kit
The kit includes the 9038 and 9038A relay bypass configurations, functioning as a fuel pump relay bypass master switch with a relay tester function. It's made for use with US, German, Japanese, and Korean cars - including GM, BMW, Audi, and Chrysler - and serves as a direct replacement for relays 9036, 9037, and 9038. The 12V coil and normally open contact configuration make it a sensible match for automotive and control equipment panel use. The main limitation is the same as its strength: because it covers two distinct variants, you need to select the correct one before purchase. The item is in new condition and is manufactured in China.
Bottom line
If you want one kit that covers both the 9038 and 9038A relay bypass layouts for automotive diagnostics, the MICTUNING kit is a practical option at USD 24.90. Just confirm which configuration your vehicle or test setup requires before you order.
