The parking lights and side marker lights go on and off intermittently. There is a relay module (yellow) that controls the following functions:
1 Auxillary power
2 Side Light positive
3 Aux Side lights
4 Cigarette lighter

Is this relay module the likely culprit?

I thought I reflowed the solder in this one when I had the intermittent no radio/no blower motor issue.

Is this the same relay module for the radio and blower? If not, is it located under the glove box and behind the knee bolster panel?

 

Hi supra-raleigh,

The locations of relay modules are given in the Electrical Guide, which you can download here:

Jaguar XJ40 Electrical Guide 1993

Cheers,

Don

 

Is this relay module the prime suspect?