- This voltage boost harness fits alternators with a GM 4 pin plug and is similar
- Plug and Play
- This harness can be used with engine swap applications where the stock alternator harness is not available
- NOTE: This unit is NOT FOR USE ON STANDARD 12V AGM BATTERIES. This module will increase the charging voltage by appx. 1.0 Volt and will swell and damage AGM batteries. Please check with your Lithium battery manufacturer to verify the proper charging voltage before installing this module!
Introducing the P101-L voltage boost harness, the perfect solution for secondary alternator setups or engine swap applications. Designed to fit alternators with a GM 4 pin plug, this harness is similar to our "plug and play" H104-L harness, but with a simplified design for a cleaner look.
With the yellow wire connected to an ignition switched 12V+ source, the P101-L allows you to easily turn the alternator on and off with ignition. And with the blue wire connected to the alternator's threaded output stud, you can rest assured that your alternator is running smoothly and efficiently.
The P101-L can also be used without the blue wire connected, making it a versatile solution for those who are currently running a regular battery but plan to upgrade to a Lithium battery later in their build.
However, it's important to note that this harness is NOT FOR USE ON STANDARD 12V AGM BATTERIES. This module will increase the charging voltage by approximately 1.0 Volt, which can cause AGM batteries to swell and become damaged. Before installing this module, please check with your Lithium battery manufacturer to verify the proper charging voltage.
Upgrade your alternator setup with the P101-L voltage boost harness, the perfect combination of simplicity and efficiency.
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
