Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
BOSE System
Power is supplied at all times
- through 15A fuse [No. 4, located in the fuse block (J/B)]
- to audio unit terminal 6,
- to audio amp. relay terminal 3,
- to rear speaker amp. terminal 11 and
- to AUX box terminal 7 (with rear TV).
With the ignition switch in the ACC or ON position, power is supplied
- through 10A fuse [No. 10, located in the fuse block (J/B)]
- to audio unit terminal 10,
- to AUX box terminal 6 (with rear TV).
Ground is supplied through the case of the audio unit.
Ground is supplied
- to audio amp. relay terminal 2,
- to front door speaker LH terminal 5 and
- to front door speaker RH terminal 5
- through body grounds M4, M66, M111, M147 and M157
- to rear speaker amp. terminal 24 and
- to AUX box terminal 8 (with rear TV)
- through body grounds B11, B22 and D210
- to rear TV switch terminal 3
- through body grounds M4, M66, M111, M147 and M157.
When the audio unit POWER button is pressed, power is supplied to rear speaker amp. terminal 9 and audio amp. relay terminal 1 from audio unit terminal 12. Then audio amp. relay is energized and power is supplied
- to front door speaker LH terminal 4 and
- to front door speaker RH terminal 4.
Audio signals are supplied
- through audio unit terminals 1, 2, 3, 4, 13, 14, 15 and 16
- to terminals 2 and 6 of the LH and RH front speakers and terminals 5, 7, 18 and 20 of the rear speaker amp.
- to LH and RH tweeters through terminals 1 and 3 of the front door speakers.
- to rear LH and RH speakers through terminals 1, 2, 25 and 26 of the rear speaker amp.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.