Hi how is everyone doin I was wondering what is best way to jump start my 04 xj8 positive to positive & neg. To neg. Or neg. To ground. On my car. Thanks have a great day.

 

From Section 6 of the owners manual;

The procedure must be followed exactly, being careful not to cause sparks:

1. Unclip the battery positive (+) terminal cover.

2. Attach one end of the red jump lead to the positive (+) terminal of the booster battery and the other end to the positive (+) terminal of the discharged battery. Make sure that a good connection is made.

Caution: Do not connect the negative jump lead directly to the negative (-) terminal of the discharged vehicle.

3. Attach one end of the black jump lead to the negative (-) terminal of the booster battery and the other end to the earth stud on the left-hand side of the spare wheel well.

4. Start the engine.

5. When started, allow the engine to idle for five minutes before disconnecting the cables.

6. Disconnect the black jump lead from the earth point and the booster battery negative (-) terminal.

7. Disconnect the red jump lead from the positive (+) terminals of both batteries.

8. Refit the cover to the positive (+) terminal.

9. Close the trunk floor panel

 

Thanks I did it wrong had it hooked to neg. Cable. Thanks for ur help. P.s. did I hurt anything. Having it wrong? Thanks again

 

Using the factory techique is better for the electronics.
But people have jumped off cars incorrectly without damaging anything. But do not make a habit of it.
Why were you jumping it off? A new battery may prevent having to jump off and eliminate the potential issues.

 

Did some work on motor now when trying to start cranking slow.battery reads good just sitting there. But volts drop down during cranking wanted to see if would start by jumping before buying battery. Thanjs for your help. Cheers. Chris giles